(tos-fozt6-10234 4 7 4 a SECRET ALA SK-/ viet _ ete te see ee, mec 3. Wad Set Scat dd Ls ee cee, ‘ i July 1964 MEMORANDUM FOR THE RECORD ; SUBJECT: Test of Open Sight Hood for 7.62un Belgiwa (PAL) Rifie REVERENCE: A) Meno for Red. dated 25 May 1944, Subject: PAt- a Silencers/Sights, from C/WH/SA/MOB/PH . ere, B) emo for Red. dated 10 June 1964, Subject: Tests poe Rte . On 13 and 16 June 1964. the undersigned and Mr, Gey Lzab/abe went to to test an open sight hood for a Belgium (FAL) Rifle developed in answer to Ref. A. j The Modified Villians peep sight developed previously in answer i to Ref. A and reported on in Ref. B. proved unsatisfactory to the : | Fequester. The snap-on sight hood was then developed on a quick ; reaction basis to be simpler to install and easier to use than + ,., - She Williams sight. In addition scne improved underloaded 7.62mm : ‘ HATO rounds having @oft. annealed cases and cream of wheat filler - , of Modified Sights for 7.63 Belgius (FAL) Rifle .W6re tested for performance, These were developed in hopes of i 7% °"  &, The open sight hood snaps over the existing rear sight ' 7. 3,, @& the PAL rifle, and in theory makes shooting in poor light or .8¢ Bight easier, It can be used with either standard faatory _-{,- > loads or the underloaded assunition in conjunction with the muzzle OO ‘attachment silencer. The notch on the rear eight hood is "U" shaped . ., apd raised to compensate for the more curving trajectory of the low . velocity ammunition. The hood is easily detached making the con- ' 2 wentdoaal peep sight available any time it is éesired, eo -  * 3, . The attached data sheet suzmarizes the test results. I¢ — “_«., Was ound that some familiarization was necessary to get used te jivs.. 7 thé open sight, Under ideal conditions the sight was as eary to i lal - Use as the peep sight although it was more difficult to maintain ° uniform vertical grouping. The relationship between the eye and i! @6ar Gight was found to be very critical. 4 the tests proceeded - : & Change was noted in the point of impact we. point of aim which was : thought to be due to a change in sight picture on the part cf the ro, 4. The improved amaunition was found to be quite consistant +48 performance, The use of cream of wheat filler to tamp the powder -- ¥ Was a@ attezpt to get mors even ignition = uracy. The expended cartridge “tee ecked periodically ané no evidence was: found of the: ~-: - 7 ’ *" goft annealed cases not expanding properly. During the teste the < <> : wWifle and ammunition combination instilled a degree of confidence ae ip the undersigned not present in the previous teats. pee Se See ie SECRET oss RS Te euermemmammrneceemnanoietmpiei te enn ERR EUEArEIEtY SEP EORNr ena Stettaides Ainereeeeaetenateeneen tn onamennen nadie ont aa anearenaadliienenam ane
14-00000 af, 8. Testa were conducted in the evening to determine the degree of usefulness of the sight in poor light. Ia this respect a 22 Caliber Hi-Standard pistol with folding shoulder stock and Bushnell 1.3X Phantom scope wag tested in comparison. The scope was equipped with yellow filters to brighten the sight picture for oe low light level use. It was the opinica of both test personne] . i-- <. +. that the scope was superior to either the peop Sight or open aight - : fom as long as their was some illumination on the silhouette 7 targets. Once the light failed the scope was completely useless although the undersigned could still discerns targets with the naked eye out to 50 yde, All actual shooting was dona with the open ' wight and some difficulty was experienced in hitting the targets at ranges of 100 yds. or sore even at dusk, fhe closer targets eould be easily bit up uhtil it became too darz to see them at all. : A large rain cloud soving from behind the firing position gradually if . Obscured all available light. For the final shooting at 25 yds. i.‘ | @ceasional lightning flashes gave only a vague awareness of the F -, target location. At no time during the sight trials was there an | ‘7 “pugele flash visible from the under loaded aznunition abd wussle ., ' siieicercosbinatios. @ gas por was @ off position ; @ during the daylight trials was turned on at night but no flash was , visible at the breech. A fine white cloud of cream of wheat powder was visible in front of the suzzle at almost full darkness - but could not be seen sore than 30 feet avay. . wine bow far away an alert listener could discern the mechanical ‘noise of the mechanios and that of the round being fired. Mr. walked away downwind et an sagle of 90 Gegrees to the line of fire and stopped to listen every 25 paces. The undersigned fir toate Gingle rounds, (hand actuating the mechanpise) each time Mr. iecagesy @topped, At 325 paces, or roughly 275 yds., Er. reported. __ ,.;; {- “Be could still hear the mechanisa being actuated, the round being. | .. fared, and the bullet striking a concrete Pillar 200 yds. down- : _, Fange, However, he stared that he might not have noticed the sound 1, -- @t that range had he not been listening for it specifically. ne g i - 6, Listener trials were conducted the following day to deter- i ~ © %, One of the major causes for concern at the start of the ., ’ tests was that the cream of wheat filler sight clog the silencer ; -?-7) apd render it ineffective. A total of 200 rounds were fired with ‘2 47 the silencer in place and the noise level did seem to be higher at ;/ic., the finish of the second day. (Round numbers 180 to 200 were the . ‘- OnG® expended during the previously mentioned listener trials). ws *. _- Inspection of the silencer at a later date revealed considerable as “3... > 6P@a8 Of wheat residue in the screening. Sound level neasurencats ‘ made im the AMP sound lab showed that while the total noise level ": Was mo higher, the duration was relatively longer, This would ; .- Make the silencer seen louder to near by observers but not increase — . the range at which it could be heard, However, from a stand~ ’ point of the ability for a listener to discrisinate a silencer being fired from random noise, the longer guration gives hin a better chance to recognize what he hears. = eo Bet etme + > a Sones eck Be
14-00000 Foy: oo 2 eas eae © 2G memes we 88 OO ww ote Ot ere ees 75 ewe 4 o : tS the: 5 the 7.62ma Belgium (FAL) Rifle (Sniper Version) and in the Agency 8. On 19 June 1964, the undersigned went to the warehouse at Franconia to try to fit the aight hood to other 7.65mm FAL rifles. It was suspected that the fit might be a problem when it . an WOuld not fit over the rear sights of three FAL rifles at Isolation. { weplacement for the original 400 underloaded rounds. Although it was later determined that the three rifles.vwere of a different lot and say therefore have different tolerances on the — * rear sight casting, it was felt that furtber checking was necessary. Mine PAL rifles from the same lot as those obtained by WH/SA/MOB/PM were unpackaged and the sight hood tried on the rear sight. Of the nine, two were perfect fits and the other seven too thick . for the hood to fit, This created a problem in that the Gignt hoods had to fit rifles which for operational reasons could not be measured before hand to determine the thickness of the rear sight blade. Providing adjustment in the slot ef the eight hood vould have complicated the fixture to the point where it could become operationally unsuitable. Therefore it was determined that the best solution was to provide several esall files with the hoods. The peep sight on the rifles, & soft casting, was found to be quite easy to file. In most cases it would be necessary only to file several thousandths to obtain a proper fit. Thie precedure was explained to C/WH/SA/HOB/FM and he stated that it would be ; acceptable. : . . | * Pa . C 9, On 24 June 1964, three open sight hocds with accessories nsisting of two files and a small acrewdriver were turned over to C/WH/SA/MOB/PH. In addition, 400 rounds of improved under- joaded ammunition with cream of wheat filler were provided as a “evel that Fe LS 10. On 29 June 1964, it was discovered that a scope was availab) supply system. Steps are being taken to obtain a scope for evaluation, The reeults will be forwarded to C/#H/SA/KOB, ~ e3 : ata te idcoky eran 8 Camb Sb bend Sead an. a a te aan means al ‘sas usa kthddaa din ad tetthhe de § bret ot hace
AAP ETE POE TLE PER Spat ear “rea Raheem teeseettbien stream en nureneesepnnpnenaticennnntinten. RENEE EEeerce rn rh 's SEER « SET ray reget TERRY, « STANDARD VELOCITY AMMUNITION, DAYLIGHT: 4 POINT OF IMPACT rn “RANGE RAMP BETTING SIGHT TYPB © (RELATIVE TO pOIN or a EXTREME SPREAD “Peep =f On Ota Peap ;- On ; ie ro Peas 8 Open Boo 9-24" high ty 160 yds, Ho, 100 yds. Ho, 100 yde. Ro. 100 yds, No. ' Open Hood. 26" high AT aN { ‘€RLOADED AMMUNITION, OPSK SIGHT; HOOD, DAYLIGHT! wil . POINT Of IMPACT - RPRENB HORIZONTAL RANGE RAMP SETTING (RELATY 70 _POINT OF any SPREAD SPREAD 23 yds, No, 2 3" high, re 1), 25 yds, Ko. 6 3" low ! Jl BR 3/4" we $0 yds. No, 6 On ¥ . 8, om 7 yda. ko, 6 4” loft’, 4" low n eet os BM 100 yds, Full Blevation 6" left, 8" low ne eer iictd 100 ydx. Full Slevation On (Diz. Shooter) om . -* 8" 100 yx. Full Blevation 8" left, 8" low ow | lau e" yy 125 yds, No 2 8" lef¢, 18" low om Hi ian 125 yds, Full Blevatiog On (Changed Sight, Picture) == °." an 8 (2 wissed 2 , nen . mS target 150 yds, Bull Elevation On (cna Bight Picture) -- |". 6" 8 @ missed <4 me ve ¢ , target) : Pt . ‘ a4 4 “ . J» yds, Pull Elevation 6” low. ‘Cnanged Bight Pisce «= , s* - 4 . & ture) ‘4 ow . arr ae ol Be , . v “Re a, ’ ® 3 . . : , < mi { 7 wee oad : ‘ a * . a. tet ar D wg) he ae Oe sys a sae Oe voy a Seove 2. § os % z « _ es g 2
14-00000 Were + a - oy fee weet . Ce ea . BAT OB gene * . 4. Ves cant ste bt emanation es = wee ne aman 8 ovean os atl e weenie nessa eens oe eee worms saan > ” ~ . . 1 : : ra . ‘ ‘ ‘, we : . & i ¥ 7 ‘ Ae. ‘ id . oy . - UNDERLOADED AMMUNITION, OPEN sicut ROOD, DUS: - Te ete * . RANGE OO, OF ROUNDS ma OF BITS BoRAZONTAL SPREAD venricay SPARAD | stot ; Could , target BORD aS , 209 yés. 10 © & ra i. clearly through Peep if RoE, ; 7 : Bight ¢ mo rounds my oe Fa wore fired. (aes oo yds. 10 a Could age target very’ ri i . ae oo “clearly gith i. Sx 2 ey : es PES ‘ “4s to, eet + UNDER.OADED AMMUNITION, ALMOST FULL DARK, 0 : a on ‘ RANGE «HO, OF ROUNDS NO, OF HITS HOREZONTAL SPREAD VERTICAL SPREAD. REMARKS “78 yda, 16 a, oo) Poop oigae gocloss r a “BS yds. 20 oO yg > Could db targets out te 4 ee ee ae ea, 200 yds, with filtered. Sa rc we " geope at start of 2 > . COWEN pe ak oo 2 iing, sould pot’ wes. = ; soe at; all. w/ecope at ; a v4 : _P4piehy , < sOERLOADED AMMUNITION, OPEN BIGHT ROOD, PULL DARK: ft ne RANGE NO. OF ROUNDS NO. OF HITS - REwanxs . se ‘ a ; ae. 28 yds. 10 Ss (scattered) Target in total darkness, rain cloud overhoaa, inter. m tae .. 8@tant lightning flashes gave a vague awareness of , a me Ss toneet location, 7 e ho ws re . i . “f, r 7 x ao * . 2, ‘¢ u : . . : . « foe . * . * . og