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45 AUTO CALTLER PISTOL (Specimen K71) ™ Specimen K71 is a .45 Auto caliber U. S. Pistol, Model {1911, semiautomatic pistol. The serial number, which © was pleced on the receiver of this pistol, has been oblitgreted. Tre barrel of this pistol is rifled with six lands and grooves, left twist (land width=.070 inch, gropve width=, 140 inch). Specimen K71 was very corroded and structurally damaged by intense heat and the "cooxing-off* of the . cartridges contained in the magazine. Present in the Tagazine were six ruptured .45 Auto caliber unfired cartridge cases anc five copper-jacketed, hollow-pointed unfired -. bullets. The "FN 45 65" headstamos present on these cartridge cases indicate that they were manufactured by Fabrique Nationale d'Armes ce Guerre of Belgium. The noses of these bullets appear to have been hollowed-out subsequent to their manufacture. Two loose cartridge cases were also contained in the pacxagé containing the K71- ‘pistol. One of these cartridge cases bore a firing pin impression which indicated it had been fired in the K71 pistol. This cartridge case bore a "FC 5" neadstamp which indicates it was manufactured for military use by the Federal Cartridge Corporation. Tne other loose carciridye tase which bore a "FN 45 65" neaastamp, was not Fired. It apparently "cooked-off." * After being cleaned, the slide, extractor and barrel of the K71 pistol were test fired on the: frame of a similar pistol obtained from the Laboratory's Reference Firearms | Collection. Inasmuch as the firing pin of the K71 pistol was missing, the firing pin was also substituted. Therefore, onlv the breechface, extractor and chamber mark ‘ings present on the test fired occtridge cpses ara ralevant It is noted that no .45 caliber bullets or cartridge eases have been vreviously submitted in this case for comparison with the test bullets and, cartridge cases obtained From specimen K71. ro. Oey ge News . -38 ‘SPECIAL CALIBER REVOLVER (specimen K82) et Specimen K82 is a .38 Special caliber Smith and Wesson, JJodel 36, double~action . revolver. The serial nurter which was placed on the butt of the frame of this revolver ; by the manyfacturer has been olbiterated. The barrel of this revoer is rifled with five lands ‘and grooves, right twist {land} width=. 100 znch,’. groove width=.115 inch). Page = os ae ; me , - (Over)