14-00000
104-10216-10171
ཏྟཱ་
2025 RELEASE UNDER THE PRESIDENT JOHN F. KENNEDY ASSASSINATION RECORDS ACT OF 1992
HEMORANDUM FOR THE RECORD
10 June 1964
SUBJECT
:
REFERENCE:
Tosts of Modified Sights for 7.62 Bolgium (FAL) Rifle
Mamo for Red. dated 23 May 64, Subject FAL Silencers/
Sights, from C/E/SA/HDD/PH
1. On 2 June 1964, Hr. Donald R. Dunn, TSD/ED and the
undersigned went to Isolation to test a modified sight and a
telescopic sight developed for the 7.62 Belgium (FAL) Rifle in
answer to reference a). The tests were performed with the assistance
of Mr. James Earb and Mr. Glen Winstead, Isolation.
2. The first tosts were conducted with a Williams Peep sight
modified to fit an aluminum block which was mounted in place of the
standard 
FAL rear sight. The Williams sight has a larger diameter
poop than the FAL sight and has a wider range of elevation settings
as well as more positive control over both elevation and windage.
The main purpose of the test was to establish a point of reference
on the aluminum block to match the graduations on the Williams
sight and allow the sight to be set visually for the desired range
once the weapon was zeroed.
3. Firing commenced from 100 yards at a silhouette target
using the hood of a jeep as a rost. Both underloaded and full load
rounds 
were used. Light rain which gradually increased in intensity
during the day served to complicate the procedure. The test
[results at ranges from 25 yds. to 130 yds. using the Williams
sight are summarized in Attachment I. Exceedingly erratic results
were obtained throughout the tests and one attempt to duplicate
the 100 yd. zoro resulted in a different setting later in the day.
4. 1. 2x scope of Japaneso manufacturo equipped with aluminum
mounting rings front and rear to fit the rear gas port and rear
sight mount respectively then tested. The scope was attached to
the rifle with difficulty and attempts to zero it were frustrated
by the inability to determine where the rifle was shooting. The
mounting moved while attempting to adjust the olovation knob and it
was determined that the mount could not be attached firmly enough
to insure in retaining a proper zero. The test with the scope
was aborted.
File
SECRET
Lash-
14-00000
S. It is recommended that the scope and count be discarded
as unfeasiblo. The Williams sight is acceptable although the
number of clicks por revolution of the knob should be reduced.
Purther testing of the underloaded ammunition should be con-
ducted to determine the reasons for the erratic performance.
cc: C/TSD
C/H/SA/MCB/FM (Cal Hicks)
Attachment:
As Stated
DDR/TSD/EB/DJH/EC
C/TSD/SDB
SECRET
DANIEL J. HOGAN
14-00000
ATTACHMENT I
2 June 1964
Williams Peep Sight
At 25 yds., reduced loads
Raise sight 60 clicks from bottom
Match ref. line to 4th line from top
At 50 yds., reduced loads
Raise sight 80 clicks from bottom
Hatch ref. line to 5th line from top
At 73yds., reduced loads
Raise sight 80 to 110 clicks from bottom
Ammunition performance very erratic, wide variance on target
At 100 yds., reduced loads
Raise sight 120 to 160 clicks
1st trial, 160 clicks, little variance
Match réf. line to 9th line from top
2nd trial 3 hrs. later, 120 clicks
Match ref. line to 7th line from top
At 150 yds., reduced loads
Raise sight 230 clicks (1 trial)
Match ref. line to 12.5 line from top
Could not mount telescopic sight properly.
shooting in scope, found it moved.
At 100 yds., full loads
Raise sight 4 clicks from bottom
At 150 yds., full loads
A Raise sight 8 clicks from bottom.
Began process of
Intermittant vain throughout tests.
Cases with reduced loads were noted to be blackened at nect
after firing. Suspected to be low pressures not causing
sufficient case expansion to obtain proper scal. This can
contribute to erratic performance. Recommend gas port be turned
to off position to prevent action from opening and allowing
gas leak.
Also investigate soft annealing case necks.
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