SA | Receiver | D28291-30 | N/A | September/1943 to December/1943 | 1900001 - 2300000 | |
SA | Receiver | D28291-32 | N/A | December/1943 to May/1944 | 2300001 - 2850000 | |
SA | Receiver | D28291-34 | N/A | May/1944 to July/1944 | 2850001 - 3000000 | |
SA | Receiver | D28291-35 | N/A | July/1944 to October/1945 | 3000001 - 3888000 | |
SA | Receiver | D28291-3SA | N/A | September/1940 to May/1941 | 65001 - 247000 | |
SA | Receiver | D28291-9SA | N/A | May/1941 to July/1941 | 247001 - 280000 | |
SA | Receiver | D6528291-42 | N/A | October/1945 to January/1954 | 3888000 - 4206000 | |
SA | Receiver | D6528291-43 | N/A | January/1954 to December/1955 | 4206001 - 5458000 | |
SA | Receiver | F 6528291 | N/A | December/1955 to December/1957 | 5458001 - 6099905 | |
WRA | Barrel | D35448W.R.A. | N/A | December/1940 to May/1942 | 100101 - 165500 | Markings on top right. No date of manufacture present. |
WRA | Barrel | D35448W.R.A. | N/A | May/1942 to June/1945 | 165501 - 2540999 | Markings on top left. No date of manufacture present. |
WRA | Bullet Guide | B887 | Type 2A | June/1942 to January/1945 | 1204192 - 2540999 | Forged and milled. Wide slot. Marked "CM". |
WRA | Bullet Guide | B8875 | Type 1A | December/1940 to May/1942 | 100101 - 1030000 | Forged and milled. Narrow slot. Marked "BB8875W.R.A." |
WRA | Bullet Guide | B8875 | Type 2B | June/1942 to January/1945 | 1204192 - 2533000 | Forged and milled. Wide slot. Marked "A". |
WRA | Bullet Guide | B8875 | Type 2C | June/1942 to January/1945 | 1204192 - 2533000 | Forged and milled. Wide slot. Punch marked. |
WRA | Bullet Guide | B8875 | Type 2D | January/1945 to June/1945 | 1600000 - 1640000 | Forged and milled. Wide slot. Marked "8" or unmarked. WIN-13. |
WRA | Bullet Guide | B8875 | Type1B | May/1942 to June/1942 | 1030001 - 1065000 | Forged and milled. Narrow slot. Punch marked. |
WRA | Clip Ejector | C46018 | N/A | December/1940 to June/1945 | 100101 - 2540999 | Early were blued, late were parkerized. |
WRA | Clip Latch | C46011 | Type 1B | December/1940 to June/1945 | 100001 - 1640000 | Rounded front end, unmarked, punch mark |
WRA | Clip Latch | C46011 | Type 1C | January/1943 to June/1945 | 1280000 - 2540999 | Rounded front end, many but not all marked "CM" |
WRA | Clip Latch | C46011 | Type 1D | May/1943 to June/1945 | 1333683 - 2540999 | Rounded front end, many but not all marked "A" on outside |
WRA | Clip Latch Pin | N/A | N/A | December/1940 to June/1945 | 100101 - 2540999 | 3.280 inches long,head is 0.155 inches in diameter and 0.065 inches high. Opposite end slightly rounded. Body of pin is 0.119 inches in diameter. |
WRA | Clip Latch Spring | N/A | N/A | December/1940 to June/1945 | 100101 - 2540999 | 0.03 inch steel wire, 5 coils, outside diameter 0.26 inch. White finish is original, Parkerized indicates refinishing. |
WRA | Follower and Slide | N/A | Type 1D | December/1940 to November/1943 | 100101 - 2340000 | Marked with "CM", not all are marked. |
WRA | Follower and Slide | N/A | Type 2A | November/1943 to December/1944 | 2340001 - 2533000 | Punch marked, not all are marked. |
WRA | Follower and Slide | N/A | Type 2C | November/1943 to December/1944 | 2340001 - 2533000 | Marked with "11", may be punch marked. |
WRA | Follower and Slide | N/A | Type 2E | January/1945 to June/1945 | 1600000 - 1640000 | Marked with "13", may be punch marked. |
WRA | Follower Arm | B8869 | Type 1 | December/1940 to January/1941 | 100101 - 100501 | Unmarked. Single triangular bevel on right side. |
WRA | Follower Arm | B8869 | Type 3 | February/1941 to June/1945 | 100502 - 2540999 | Unmarked. Single shallow bevel on left side above pin hole. Follower arm lugs were rounded. Might show rough machining, punch mark and/or "6,8,or 9" to indicate drop forge number. |
WRA | Follower Arm Pin | A13667 | Type 2 | December/1940 to June/1945 | 100101 - 2540999 | 0.15 in rebate at end, 0.07 in at top. |
WRA | Follower Rod | C46014 | Type 1B | December/1940 to March/1941 | 100101 - 102000 | No drawing number on rod. Short fork. 14 vertical knurls, round behind shoulder. Used with compensating spring. |
WRA | Follower Rod | C64331 | Type 3A | March/1941 to August/1941 | 102001 - 120000 | Forged, one piece. Flat profile, 14 vertical knurls. Short fork. Drawing # not marked. |
WRA | Follower Rod | C64331 | Type 3B | August/1941 to December/1944 | 102001 - 2533060 | Forged, one piece. Flat profile, 14 vertical knurls. Short fork, marked "CM". Bevels on sides of lower fork prong. WAS NOT USED BETWEEN SERIAL #s 1600001 to 1640000 (WIN-13). |
WRA | Follower Rod | C64331 | Type 3C | August/1941 to December/1944 | 120001 - 2533060 | Forged, one piece. Flat profile, 14 vertical knurls. Short fork, marked "A". Bevels on sides of lower fork prong. WAS NOT USED BETWEEN SERIAL #s 1600001 to 1640000 (WIN-13). |
WRA | Follower Rod | C64331 | Type 3D | December/1944 to January/1945 | 2533001 - 2534232 | Forged, one piece. Flat profile, 14 vertical knurls. Short fork, punch marked. WAS NOT USED BETWEEN SERIAL #s 1600001 to 1640000 (WIN-13). |
WRA | Follower Rod | C64331 | Type 5 | January/1945 to June/1945 | 1600001 - 1640000 | WIN-13. Stamped sheet metal. Long fork plate riveted. No marking. Grooves/knurls eliminated. Punch marked or stamped with "A". |
WRA | Gas Cylinder | D35449 | Type 2B | October/1941 to December/1943 | 125001 - 2350000 | .50 inch front sight base, no flat top on rear ring, unmarked. Not for WIN-13 (1,6XX,XXX - 1,64X,XXX). |
WRA | Gas Cylinder | D35449 | Type 2C | December/1943 to June/1945 | 2350001 - 2540999 | .575-.580 inch front sight base, no flat top on rear ring, unmarked. Includes WIN-13 (1,6XX,XXX - 1,64X,XXX). |
WRA | Gas Cylinder | D35449W.R.A. | Type 2A | December/1940 to October/1941 | 100101 - 125000 | .50 inch front sight base, no flat top on rear ring, marked "D35449W.R.A." on right side of rear ring. |
WRA | Gas Cylinder Lock | B147426 | Type 1 | December/1940 to June/1945 | 100001 - 2540999 | Front face chamfered,no hump, unmarked. 1.225 - 1.335 inches high. may be punch marked and have machining marks on face. |
WRA | Gas Cylinder Lock Screw(Plug) | B147428 | Type 1 | December/1940 to January/1945 | 100001 - 2540999 | Single slot, no poppet valve. May be punch marked or have machining marks on face. |
WRA | Gas Cylinder Lock Screw(Plug) | B7310079 | Type 3 | January/1945 to June/1945 | 1600000 - 1640000 | WIN-13. Return poppet valve, cross shaped slot. May be marked "P", "O" or hexagon. |
WRA | Lower Band | C46000 | Type 1B | December/1940 to May/1942 | 100101 - 1200000 | Milled arched profile with central groove and scallops. Unmarked. |
WRA | Lower Band | C46000 | Type 1C | May/1942 to June/1945 | 1200001 - 2540999 | Milled arched profile with central no groove or scallops. Unmarked. |
WRA | Lower Band Pin | N/A | Type 1 | December/1940 to June/1945 | 100101 - 2540999 | Solid Pin. |
WRA | Operating Rod | D35382-W.R.A. | 1A | December/1940 to August/1943 | 100001 - 1787000 | Slant bolt lug,no radius cut, curved side, marking on bottom |
WRA | Operating Rod | D35382W.R.A. | 1B | August/1943 to January/1945 | 1787001 - 2574000 | Slant bolt lug,no radius cut, curved side, marking on bottom |
WRA | Operating Rod | D35382W.R.A. | 6A | January/1945 to June/1945 | 1600000 - 1640000 | WIN-13. Straight bolt lug, no radius cut, flat side, marking on bottom |
WRA | Operating Rod Catch Assembly | C46027 | Type 1 | December/1940 to July/1943 | 100101 - 1350000 | Marked with "CM", "A", punch marked or unmarked. Right and Left fork 0.08 in wide, width at accelerator rivet 0.73 in. |
WRA | Operating Rod Catch Assembly | C46027 | Type 2 | July/1943 to June/1945 | 1350001 - 2540999 | Punch marked. Right fork 0.10 in wide and Left fork 0.07 in wide, width at accelerator rivet 0.79 in. |