A Tool for Calculating the Center of Mass and 

Moment of Inertia of Small Arms Weapons 

by Michael E. LaFiandra 

ARL-TR-4517 July 2008 

Approved for public release; distribution is unlimited.
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Army Research Laboratory 

Aberdeen Proving Ground, MD 21005-5425 

ARL-TR-4517 July 2008 

A Tool for Calculating the Center of Mass and 

Moment of Inertia of Small Arms Weapons 

Michael E. LaFiandra 

Human Research and Engineering Directorate, ARL 

Approved for public release; distribution is unlimited. 
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4. TITLE AND SUBTITLE 

A Tool for Calculating the Center of Mass and Moment of Inertia of Small Arms 

Weapons

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62716AH70

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6. AUTHOR(S) 

Michael E. LaFiandra 

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U.S. Army Research Laboratory 

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Aberdeen Proving Ground, MD 21005-5425

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Approved for public release; distribution is unlimited.

13. SUPPLEMENTARY NOTES 

14. ABSTRACT 

The center of mass (COM) of a body or segment is the point about which the mass of the body or segment is evenly distributed. 

Moment of inertia (MOI) is the measure of a segment or object’s resistance to changes in angular velocity. Mass properties, 

such as COM, MOI, and mass, allow for characterization of objects and for an easy comparison of the effects of force and 

torque on the dynamics of the object. 

This report describes and demonstrates the use of a software tool designed to calculate the effect of weight added to a weapon 

on the weapon’s mass properties (COM, MOI, and total mass). The weapon COM tool was developed in support of the North 

Atlantic Treaty Organization (NATO) Research and Technology Organization (RTO) Systems Concepts and Integration 

(SCI)-178 RTO Task Group (RTG)-043 task group on dismounted Soldier system weapon systems inter-operability. The 

NATO SCI-178 RTG-043 task group has identified assault rifle weapon weight and COM as a primary research area.

15. SUBJECT TERMS 

biomechanics, center of mass, moment of inertia, small arms

16. SECURITY CLASSIFICATION OF: 19a. NAME OF RESPONSIBLE PERSON 

Michael E. LaFiandra a. REPORT 

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c. THIS PAGE 

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OF ABSTRACT 

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410-278-5962

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Prescribed by ANSI Std. Z39.18 

ii
Contents 

List of Figures iv

Executive Summary v

1. Project Background 1

2. Objectives 3

3. Equipment 3

4. Methods 3

4.1 Software Algorithms for Calculating Mass Properties....................................................3 

4.2 Graphical User Interface .................................................................................................6 

4.3 Sample Analysis............................................................................................................11 

5. Concluding Remarks 14

Distribution List 16 

iii 
iv 

List of Figures 

Figure 1. Two objects with similar locations of COM (i.e., the center of the object). 

(Because of different distributions of mass, these objects have vastly different MOIs.) ....... 2 

Figure 2. Weapon showing orientation of axes. ............................................................................ 4 

Figure 3. Diagram showing parallel axis theorem parameters. ..................................................... 5 

Figure 4. Diagram showing distances used for calculating MOI around composite COM........... 6 

Figure 5. Weapon selection screen. ............................................................................................... 6 

Figure 6. Weapon mass properties analysis window..................................................................... 7 

Figure 7. Cross hairs showing location of the mouse pointer........................................................ 8 

Figure 8. Screen showing origin moved. ....................................................................................... 9

Figure 9. Input area of analysis window showing data entry box for Added Weight 2. ............... 9 

Figure 10. Output area of analysis window. ................................................................................ 10 

Figure 11. Input area with ACOG weight set to zero. ................................................................. 11 

Figure 12. Weapon with cross hairs............................................................................................. 11 

Figure 13. Input area with Added Weight 2 set to 3.27 lb........................................................... 12 

Figure 14. Output including effect of Added Mass 2, default origin........................................... 12 

Figure 15. Output with Added Mass 2 moved............................................................................. 13 

Figure 16. Output with Added Mass 3......................................................................................... 14

Figure 17. Output with origin aligned with unweighted weapon. ............................................... 15 
Executive Summary 

This report describes and demonstrates the use of a software tool designed to calculate the effect 

of weight added to a weapon on the weapon’s mass properties (center of mass [COM], moment 

of inertia [MOI], and total mass). The Weapon COM Tool was developed in support of the 

North Atlantic Treaty Organization (NATO) Research and Technology Organization (RTO) 

Systems Concepts and Integration (SCI)-178 RTO Task Group (RTG)-043 task group on 

dismounted Soldier system weapon systems interoperability. The NATO SCI-178 RTO-043 task 

group has identified assault rifle weapon weight and COM as a primary research area. 

The COM of a body or segment is the point about which the mass of the body or segment is 

evenly distributed. MOI is measure of a segment’s or object’s resistance to changes in angular 

velocity. Mass properties, such as COM, MOI, and mass, allow for characterization of various 

weapons and allow for an easy comparison between weapon systems. 

The Weapon COM Tool is based on fundamental equations found in many physics or 

biomechanics texts1,2 and can determine the effects of as many as four added weights. The 

added weight can be accoutrements (such as new sights), additional weapons (such as an M203 

grenade launcher), or any other object that is mounted to the weapon. 

This report documents the development of a tool for calculating the mass properties of a weapon 

and subsequently does not report the results of a specific analysis or evaluation. 

 1

Winter, D. Biomechanics and Motor Control of Human Movement (2nd ed.); New York: John Wiley and Sons, 

1990. 

2

Hamill, J.; Knutzen, K. Biomechanical Basis of Human Movement (1 ed.); Baltimore: Williams & Wilkins, 

1995. 

v 
INTENTIONALLY LEFT BLANK

vi 
1. Project Background 

This project is in support of the North Atlantic Treaty Organization (NATO) Research and 

Technology Organization (RTO) Systems Concepts and Integration (SCI)-178 RTO Task Group 

(RTG)-043 task group on dismounted Soldier system weapon systems interoperability. This 

group was created to advance developments in the area of integration and interoperability of 

dismounted Soldier system weapon systems. The task group considers the technical issues, 

human factors, and power requirements associated with infantry weapons that are components of 

dismounted Soldier systems. Currently, there is a large variety of assault weapon types (M4, 

M16, G3, FAL, and Steyr), designs (traditional, bullpup, etc.), firing mechanism controls, and 

weights. The NATO SCI-178 RTO-043 task group has identified assault rifle weapon weight 

and center of mass (COM) as a primary research area. 

Knowledge of the location of the COM of a body allows a distributed mass to be represented as a 

single location.1 The COM of a body or segment is the point about which the mass of the body 

or segment is evenly distributed.2 In order to cause a net acceleration an object, force needs to 

be applied to every particle of mass that compromises the object. The net force exerted on a 

rigid body object is represented as a single resultant force,3 and because the COM is the point 

about which the mass of an object is evenly distributed, the COM is the point at which this 

resultant force is applied. 

 

The moment of inertia (MOI) is also important in characterizing objects. While COM allows for 

a distributed mass to be represented as a single location, MOI provides information about the 

distribution of mass. Additionally, the amount of mass an object has is a measure of the object’s 

resistance to changes in linear velocity, whereas MOI is measure of a segment’s or object’s 

resistance to changes in angular velocity.1

 MOI can be defined around any point (or axis); 

however, in many cases, MOI is defined relative to the COM. Objects with the same COM can 

have vastly different MOIs (figure 1). Additionally, the MOI of an object around one point or 

axis will be different than the MOI of the same object around a different point or axis. 

Mass properties, such as COM, MOI, and mass, allow for characterization of various weapons 

and allow for an easy comparison between weapon systems. Different weapons systems that 

have similar mass properties will behave similarly when exposed to similar dynamic conditions 

(such as aiming movements and weapon firing). Understanding the effects of manipulating the 

mass properties of a weapon will provide more information that can be generalized than can be 

obtained solely by a study of specific weapons.

1

Winter, D. Biomechanics and Motor Control of Human Movement (2nd ed.); New York: John Wiley and Sons, 

1990. 

2Hamill, J.; Knutzen, K. Biomechanical Basis of Human Movement (first ed.); Baltimore: Williams & Wilkins, 1995. 

3Zatsiorsky, V. Kinetics of Human Motion (first ed.); Champaign, IL: Human Kinetics, 2002. 

1 
Figure 1. Two objects with similar locations of COM (i.e., the center of the 

object). (Because of different distributions of mass, these objects 

have vastly different MOIs.) 

The U.S. Army Research Laboratory’s (ARL’s) Human Research Engineering Directorate is 

investigating the effect of three different weapon weights and the effect of manipulating the 

COM of the weapon to three different vertical positions. In subsequent research that will 

augment the U.S. Army effort, the Canadian Army will examine the effects of three different 

weapon weights and three different horizontal COM (fore and aft) locations on shooting 

performance. This report documents a software tool that was designed to support these studies 

by allowing researchers the ability to easily determine mass properties of a weapon system. The 

tool presents a photograph of the weapon and allows the user to place weight anywhere on the 

weapon by clicking on the screen. After the weight is placed, the software returns the mass 

properties of the weapon, including the effects of the added weight. 

One use of this tool is to determine where to place weight on the weapon to obtain specific mass 

properties. This would be useful for experimental design of a study of the effects of mass 

properties, such as ARL’s weapon aiming study.4 Using the tool in this manner allows the user 

to manipulate the location and magnitude of mass added to the weapon; the tool will produce 

output that includes COM location and MOI based on the mass properties of the weapon (with 

no added weight) and the location and magnitude of the added weight. The user will be able to 

easily determine where to place weight on the weapon in order to achieve specific mass 

properties suitable for the experimental design. 

Another use of this tool is to determine the effect of adding accoutrements (e.g., weapon 

systems, scopes, etc.) to a weapon on the mass properties of the overall system. Given the mass 

 4

Harper, W.; LaFiandra, M.; Ortega, S. The Effect of Weapon Weight and Balance on Shooting Performance 

with an Assault Rifle; ARL HRED Protocol 20098-07036; U.S. Army Research Laboratory: Aberdeen Proving 

Ground, MD, 2007. 

2 
properties of the unweighted system and the mass and location of the added components, the user 

can place these objects on the picture of the weapon and the software will output the resulting 

mass properties of the weapon system including the accoutrements. 

2. Objectives 

The objective of this project was to develop an interactive tool for displaying and quantifying the 

mass properties of a weapon system based on the mass, COM location, and MOI of the weapon, 

and the mass and location of added accoutrements. A secondary objective was to produce an 

easy-to-use graphical user interface (GUI) for implementing the tool. 

3. Equipment 

The tool is software custom written in the MATLAB* (version 7.1.0 R14) programming 

language. 

4. Methods 

There are two parts of the tool. One part is the underlying software algorithms that perform the 

calculations and determine the mass properties based on user input. The other part is the GUI 

designed to allow input from the user and to display output. Each part of the software is 

described in detail in the following sections. 

4.1 Software Algorithms for Calculating Mass Properties 

The determination of COM location for an object can be calculated with equation 11,2

General form of COM equation: ∑==

n

i

x ii xm

M

COM

1

1 , (1) 

in which COMx is the location of the COM of the object along the object’s x axis, M is the total 

mass object (including the mass of all the segments), n is the number of segments that comprise 

the object, mi is the mass of segment i, and xi is the location of the COM of segment i in along 

the object’s x axis. Equation 1 is a general equation that can be used to figure the COM of any 

 *MATLAB is a registered trademark of The MathWorks. 

3 
object that has multiple segments. The software is designed to include as many as four segments 

(accoutrements) added to the weapon. The specific form of the equation used for this analysis is 

presented in equation 2. 

COM equation used to calculate weapon COM along x axis: 

∑

∑

=

=

+

+

= 4

1

4

1

i

w i

i

ww ii

x

mm

xmxm

COM , (2) 

in which COMx is the location of the composite COM of the weapon (including any 

accoutrements) along the weapon’s x axis (see figure 2 for axes orientation), mw is the mass of 

the weapon, xw is the location of the weapon’s COM (when there are no accoutrements), mi is the 

mass of object i, and xi is the location of the COM of object i along the weapon’s x axis. As 

written in equation 2, the software is set up to calculate the COM of a weapon plus as many as 

four accoutrements. 

Figure 2. Weapon showing orientation of axes. 

Essentially, the same equation is used to calculate the COM of the weapon along its y and z axis 

(equation 3). 

COM equation used to calculate weapon COM along y axis: 

∑

∑

=

=

+

+

= 4

1

4

1

i

w i

i

ww ii

y

mm

ymym

COM , (3) 

in which COMy is the location of the composite COM of the weapon (including any accoutrements) 

along the weapon’s y axis, yw is the location of the weapon’s COM (when there are no 

accoutrements), and yi is the location of the COM of object i along the weapon’s y axis. Many 

weapons are designed to be somewhat symmetrical along the Z axis, so the software is not 

currently set up to calculate COM along the Z axis but could easily be made to do so with 

equation 4.

4 
COM equation that can be used to calculate weapon COM along z axis: 

∑

∑

=

=

+

+

= 4

1

4

1

i

w i

i

ww ii

z

mm

zmzm

COM , (4) 

in which COMz is the location of the COM of the object along the weapon’s z axis, zw is the 

location of the weapon’s COM (when there are no accoutrements), and zi is the location of the 

COM of object i in along the weapon’s z axis. 

In order to calculate the MOI of the weapon plus any accoutrements, knowledge of the MOI of 

the weapon without accoutrements is needed. In the model, each accoutrement is considered a 

point mass on the weapon, meaning the mass of the accoutrement is concentrated in one place 

and the MOI of the accoutrement is neglected for this calculation. 

The relationship between the MOI of an object about its COM and about any other axis of 

rotation can be determined via the parallel axis theorem shown in equation 51

 

General form of the parallel axis theorem: , (5) 2 MOInew MOIcom += md

in which MOIcom is the MOI about the COM, m is the mass of the object and d is the distance 

between the object's COM and the axis of rotation. 

Figure 3. Diagram showing parallel axis theorem parameters. 

The software determines the MOI of the weapon plus any accoutrements around the weapon’s 

COM with the use of equation 6. 

MOI of weapon about composite COM (includes effects of accoutrements): 

∑( ) , (6) =

= + +

4

1

2

_

2

_ _ _

i

MOI comcomp MOI comweap weapdm weap comp dm comii

in which MOIcomp_com represents the MOI of the weapon around the composite COM (which 

includes influence of accoutrements on COM), MOIweap_com is the pre-determined MOI of the 

weapon around the weapon’s COM (that does not include influence of accoutrements), mweap is 

the mass of the weapon (without any accoutrements), dweap_com is the distance between the COM 

of the weapon (with no accoutrements) and the composite COM of weapon + accoutrements, mi is 

the mass of accoutrement i, and di_comp is the distance between the COM of accoutrement i and 

the composite COM of the weapon plus accoutrements. 

5 
Figure 4. Diagram showing distances used for calculating MOI around composite COM. 

4.2 Graphical User Interface 

The GUI was designed to allow users to choose from a list of weapons. It is currently set up for 

two weapons, the M16A2 and the M4. When the software is running, the first screen that is 

presented is a dialogue box (figure 5). In this screen, the user simply double clicks the weapon 

s/he wants to add mass to; as more weapons are studied, the list can be updated. 

Figure 5. Weapon selection screen. 

After the user clicks OK or double clicks the weapon s/he wants to analyze, the analysis window 

(figure 6) opens. This is the main window used for placing weights on the weapon. The window 

has three main areas: the picture of the weapon, the input area (bottom-left side of the window), 

and the output area (the bottom-right side of the screen).

6 
Figure 6. Weapon mass properties analysis window. 

When the M16 is selected, figure 6 is presented. The default weight of the M16 with no 

magazine is 7.48 lb. Different variants of the weapon may have slightly different weights. The 

weight varies from the default; users may change the weight on the input area of the screen. The 

MOI of the weapon was not known, so the value has a default of 0 kgi⋅m2

. The default location 

of the COM of this weapon (with no accoutrements) was determined via a balance-board 

method1

 and is shown in figure 6 as a purple circle and x. Because the location of the COM of 

the M16 was known, the Assign Weapon COM button is inactive. This button is active for 

weapons that the COM was not known at the time the software was written. If the location of the 

COM of the weapon with no accoutrements needs to be moved for some reason, click Adjust 

COM Position, and click on the new location of the Weapon COM. 

The M16 shown in figure 6 has the advanced combat optical gunsight (ACOG) already on it. 

The ACOG weighs 0.94 lb. The COM of the ACOG is assumed to be in the geometric center of 

the sight (shown as a turquoise circle and x in figure 6). If the ACOG is not part of the weapon 

system the user is interested in, the COM can be set to anywhere on the screen and the weight 

can be set to anything to represent any other accoutrements. Alternatively, the mass for this 

segment can be set to 0 and the ACOG will have no effect on the composite COM or MOI. 

In figure 6, the origin is marked by a red cross with a white background and is in the default 

origin position⎯the top of the weapon’s butt stock. The origin is the x = 0 and y = 0 position, 

7 
and is the point from where the COM location is determined. Many times, a user may be 

interested in determining the location of the COM from various other reference points. For 

instance, the user may be interested in knowing the effect adding a piece of equipment has on the 

COM of the weapon relative to the COM of the weapon with no equipment on. To do this, the 

user would click the SET ORIGIN button in the input area. 

When the SET ORIGIN button is pressed, the mouse position is highlighted with cross hairs, 

and the (x,y) coordinates of the mouse position (in meters, scaled to the size of the weapon) is 

presented in the lower left corner of the screen, just above the input area of the window (figure 7). 

Figure 7. Cross hairs showing location of the mouse pointer. 

When the cross hairs are over the desired position of the origin, the user simply clicks the mouse, 

and the origin is moved (figure 8), and the (x,y) coordinates in the bottom left of the screen now 

show the distance the origin was moved. Note that the red cross with the white background is 

now coincidental with where the user clicked, and this is now the (0,0) point. To bring the origin 

back to the default position, the user clicks the DEFAULT ORIGIN button. 

To add a weight to the weapon, the user would click the Add Weight button in the input area. 

As many as four weights can be added, including the ACOG (for the M16). When the Add 

Weight button is pushed, a new set of cross hairs is presented, and the user clicks where s/he 

wants the weight to be added. The (x,y) coordinates indicate the distance between the center of 

the cross hairs and the origin. After the user clicks where s/he wants the weight to be added, 

8 
another turquoise circle and x appear on the weapon, marking where the weight has been placed. 

Also, a data-entry box appears in the input area allowing the user to enter the weight (in pounds) 

of the added weight. If the weight was placed in the incorrect location, the user can click the 

Adjust Position button. When this is done, the weight that is being moved changes in color 

from turquoise to green, a new set of cross hairs appears, and the user can relocate the weight. 

Figure 8. Screen showing origin moved. 

Figure 9. Input area of analysis window showing data entry box for 

Added Weight 2.

9 
After all the weight locations are assigned, the user clicks the Calculate Mass Properties

button, and the output is presented (figure 10). The turquoise circles and x’s indicate the 

locations of the added weights. The purple x and circle indicate the location of the weapon COM 

(without any added weights). After clicking the Calculate Mass Properties button, a red circle 

on a white background appears, graphically indicating the location of the composite COM. 

COMx and COMy are determined via equations 2 and 3, respectively. The values in the output 

area of the window are updated. The total weight of the weapon system was determined to be 

the sum of weight of each of the components (including the weapon). The total mass of the 

system (in kilograms) is the weight times the proper conversion factor (1 lb = 0.45359 kg). The 

location of the composite COM (relative to the origin) is indicated numerically, and the MOI is 

presented relative to the COM and relative to the end of the butt stock. The end of the butt stock 

was chosen because it most proximal to the Soldier when the weapon is fired. 

Figure 10. Output area of analysis window. 

In the example given, the weight of the ACOG was entered as 0.94 lb. If the ACOG is not part 

of the weapon system being tested, the value for the ACOG weight can be set to 0 when one is 

calculating mass properties. Setting the weight of the ACOG to 0 will remove the effect of the 

ACOG on the mass properties. 

At the completion of the analysis, the user can print the window to have a record of the results.

10 
4.3 Sample Analysis 

For this analysis, an M16 will be used and two weights will be added to the barrel of the weapon. 

To illustrate the effect of adding weight to the end of the barrel, the COM will be calculated after 

each of the two weights is added. Also, the ACOG will not be included in the analysis. 

In the first window (see figure 5), choose M16 (for Canadians) from the list. The second 

window (figure 6) will be presented. Assign the weight for the ACOG to 0 (figure 11). 

Figure 11. Input area with ACOG weight set to zero. 

Click Add Weight to add the first mass. The cross hairs will appear. Click on the weapon in the 

location where the weight will be added (figure 12). 

Figure 12. Weapon with cross hairs. 

Set the weight for this item to be 3.27 lb (figure 13).

11 
Figure 13. Input area with Added Weight 2 set to 3.27 lb. 

Click Calculate Mass Properties to calculate the effect of Added Mass 2 on the mass 

properties of the weapon (figure 14). Note that the origin was left in the default location (top, 

back of butt stock). The composite COM of the weapon and Added Mass 2 is 0.531 m from the 

origin along the x axis (which is parallel to the barrel of the weapon) and 0.001 m above the 

origin along the y axis. The location of the composite COM is shown in figure 14 as a red circle. 

Figure 14. Output including effect of Added Mass 2, default origin. 

Click Adjust Position next to the Added Weight 2. The cross hairs will appear, and set the 

location of the added weight closer to the end of the barrel. Click Calculate Mass Properties

12 
again, and note that the composite COM has moved (figure 15). With the new location of 

Added Mass 2, the composite COM is now 0.599 m from the origin along the x axis and is still 

0.001 m above the origin. 

Click Add Weight to add another weight (Added Mass 3) to the weapon. Add this weight 

under the weapon, and set the weight to 4.60 lb. Click Calculate Mass Properties to determine 

the effect of adding Added Mass 3 on the mass properties of the weapon (figure 16). Note that 

the new location of the composite COM is 0.57 0 m from the origin along the X axis, and the 

composite COM is now –0.030 m from the origin along the y axis (0.030 m below the origin). 

Figure 15. Output with Added Mass 2 moved. 

The composite COM coordinates in the output are relative to the origin, which in this example is 

at the top and end of the butt stock (depicted with a red cross). Many times, it is necessary to 

know the composite COM coordinates relative to the COM of the weapon with no accoutrements. 

Clicking SET ORIGIN will allow the user to change the location of the origin. After the origin is 

set to be the COM of the weapon with no accoutrements (depicted by a purple circle and x), 

clicking Calculate Mass Properties will figure the distance between the COM of the weapon 

with no accoutrements and the composite COM of the weapon with all of the added weight 

(figure 17). While the location of the composite COM did not change when the origin was 

moved, the output window has updated values showing the distance between the origin and the 

composite COM. Because the origin and the COM of the weapon with no accoutrements are 

coincidental in space, the output window indicates the distance between the COM of the weapon 

13 
with no accoutrements and the composite COM, which is 0.104 m along the x axis, and –0.021 m 

along the y axis. Note that the MOI is not accurate in this example because the Weapon MOI in 

the input window is set to 0. 

Figure 16. Output with Added Mass 3. 

5. Concluding Remarks 

The current report describes and demonstrates the use of a software tool designed to calculate the 

effect of weight added to a weapon on the weapon’s mass properties (COM, MOI, and total 

mass). The Weapon COM Tool is based on fundamental equations found in many physics or 

biomechanics texts1,2 and can determine the effects of as many as four added weights. The 

added weight can be accoutrements (such as new sights), additional weapons (such as an M203 

grenade launcher), or any other object that is mounted to the weapon. 

14 
Figure 17. Output with origin aligned with unweighted weapon. 

15 
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 FT SAM HOUSTON TX 78234-5002 

 1 ARMY RSCH LABORATORY - HRED 

 AMSRD ARL HR MG R SPINE 

 BLDG 333 

 PICATINNY ARSENAL NJ 07806-5000 

 1 ARL HRED ARMC FLD ELMT 

 AMSRD ARL HR MH C BURNS 

 BLDG 1467B RM 336 

 THIRD AVE 

 FT KNOX KY 40121 

 1 ARMY RSCH LABORATORY - HRED 

 AWC FIELD ELEMENT 

 AMSRD ARL HR MJ D DURBIN 

 BLDG 4506 (DCD) RM 107 

 FT RUCKER AL 36362-5000 

 1 ARMY RSCH LABORATORY - HRED 

 AMSRD ARL HR MK MR J REINHART 

 10125 KINGMAN RD 

 FT BELVOIR VA 22060-5828 

 1 ARMY RSCH LABORATORY - HRED 

 AMSRD ARL HR MV HQ USAOTC 

 S MIDDLEBROOKS 

 91012 STATION AVE RM 348 

 FT HOOD TX 76544-5073 

 1 ARMY RSCH LABORATORY - HRED 

 AMSRD ARL HR MY M BARNES 

 2520 HEALY AVE 

 STE 1172 BLDG 51005 

 FT HUACHUCA AZ 85613-7069 

 1 ARMY RSCH LABORATORY - HRED 

 AMSRD ARL HR MP D UNGVARSKY 

 POPE HALL BLDG 4709 

 BCBL 806 HARRISON DR 

 FT LEAVENWORTH KS 66027-2302 

 1 ARMY RSCH LABORATORY - HRED 

 AMSRD ARL HR MJF J HANSBERGER 

 JFCOM JOINT EXPERIMENTATION J9 

 JOINT FUTURES LAB 

 115 LAKEVIEW PKWY STE B 

 SUFFOLK VA 23435 

 1 ARMY RSCH LABORATORY - HRED 

 AMSRD ARL HR MQ M R FLETCHER 

 US ARMY SBCCOM 

 NATICK SOLDIER CTR 

 AMSRD NSC WS E BLDG 3 RM 343 

 NATICK MA 01760-5020 

 1 ARMY RSCH LABORATORY-HRED 

 AMSRD ARL HR MT J CHEN 

 12423 RESEARCH PKWY 

 ORLANDO FL 32826 

 1 ARMY RSCH LABORATORY - HRED 

 AMSRD ARL HR MT C KORTENHAUS 

 12350 RESEARCH PKWY 

 ORLANDO FL 32826 

 1 ARMY RSCH LABORATORY - HRED 

 AMSRD ARL HR MS C MANASCO 

 SIGNAL TOWERS 

 BLDG 29808A RM 303 

 FT GORDON GA 30905-5233 

 1 ARMY RSCH LABORATORY - HRED 

 AMSRD ARL HR MU M SINGAPORE 

 6501 E 11 MILE RD MS 284 

 BLDG 200A 2ND FL RM 2104 

 WARREN MI 48397-5000 

 1 ARMY RSCH LABORATORY - HRED 

 AMSRD ARL HR MF C HERNANDEZ 

 2421 NW AUSTIN RD STE 220 

 FT SILL OK 73503-9042 
NO. OF 

COPIES ORGANIZATION 

18 

 1 ARMY RSCH LABORATORY - HRED 

 AMSRD ARL HR MW E REDDEN 

 BLDG 4 ROOM 332 

 FT BENNING GA 31905-5400 

 1 ARMY RSCH LABORATORY - HRED 

 AMSRD ARL HR MN R SPENCER 

 DCSFDI HF 

 HQ USASOC BLDG E2929 

 FT BRAGG NC 28310-5000 

 1 ARMY G1 

 DAPE MR B KNAPP 

 300 ARMY PENTAGON ROOM 2C489 

 WASHINGTON DC 20310-0300 

ABERDEEN PROVING GROUND

 2 DIR USARL 

 AMSRD ARL CI OK TP 

 S FOPPIANO 

 AMSRD ARL HR MR 

 F PARAGALLO 
NO. OF 

COPIES ORGANIZATION 

19 

 5 DIR USARL 

 AMSRD ARL HR MB 

 M LAFIANDRA 
INTENTIONALLY LEFT BLANK. 

20