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2 .-" &’ Bf 1-Office, 7133 :7- : eo @ ° = Airtel Attn: Mr. Morrow Rm. 5714 . 12/6/74 ~ Oo: SAC, San Francisco (7-855) ie heal lal rom: Director, FBI (7-15200) = - , “ HEARNAP ’ 7 oo: SF RE: SLA WEAPONS RECOVERED AT 1466 EAST 54TH STREET, . Fe LOS ANGELES rr ts Rebucal . '. to San Francisco 12/5/74, San Francisco _ nitel to Bureau, 11/26/74 and Laboratory Report PC- Redahts PR JA, dated 10/25/74. | . - a aE The modifications of the four submitted carbines were 7 discussed on pages 3 and 4 of the referenced Laboratory report. | 7 As previously pointed out, although the individual(s} who 7 designed this modification apparently possessed great inventive talent and a superior knowledge of firearms, the fabrication of the sear trip mechanisms and alteration of the other parts did not require a great deal of mechanical and/or machine shog; « experience, ty It 48 possible that the individual{s) who modified . these carbines were not the original designers of this modification. Having been instructed as to the method of this conversion or having seen another similarly-converted carbine, the modification of the submitted carbines could have been © .at accomplished by anyone possessing only a moderate degree of jrechanical/machine shop experience, nos 4 Contact with Technical Unit, Bureau of Alcohol, — Tobacco and Firearms, determined that this type of 4 modification has not been previously encountered, usally the dllegal conversion of the M-1 carbine to a weapon capable of “See AD Adee REC 22 /- / 5 200— (3? bo Dep. AD inv. 1 - SAC, Los Angeles (7-1627) EXii0 | . ‘sat. Din: Admin. Comp. Syat. —_ Fine ea au) HRITED 6 a Ris: 7) ‘DEC 61974 | Ss car peep 9 Leben fotory we Pton. & Eval. = ue ed TE RA Training . a ote , . : 1, . oe tee . ego! Ceun. . - Tg, 5: sO ‘ yn _ fglaphone Rm. - Lo. ee yew yp Mesaiee $ Loo TELETYPE UNIT(_J] Poy Sl ee ee te ete ak we S4 OE | nig _