SA | Trigger Guard | C46025-1SA | Type 1E | November/1940 to August/1941 | 80001 - 320000 | Milled, rear hole. |
SA | Trigger Guard | C46025-3-SA | Type 1F | August/1941 to December/1941 | 320001 - 425000 | Milled, rear hole. May show various inspectors numbers or initials. |
SA | Trigger Guard | C7312631 | Type 2A | July/1944 to October/1945 | 3000001 - 3900000 | Stamped, milled hook. No markings. |
SA | Trigger Guard | C7312631 | Type 2B | January/1952 to December/1957 | 4200001 - 6100500 | Stamped, tab hook. No markings. |
SA | Trigger Housing | 6528290 SA | Type 12 | January/1952 to December/1955 | 4200001 - 5488246 | Cloverleaf hole, pad width 0.156 inch. |
SA | Trigger Housing | 6528290-SA | Type 13 | January/1955 to December/1957 | 5793848 - 6099905 | Cloverleaf hole, pad width 0.156 inch. |
SA | Trigger Housing | D 28290 | Type 1 | January/1936 to October/1937 | 1 - 500 | Round hole, no pad. |
SA | Trigger Housing | D 28290 | Type 2A | October/1937 to April/1940 | 501 - 38000 | Round hole, pad with 0.333 inch. |
SA | Trigger Housing | D 28290 SA | Type 2B | April/1940 to October/1940 | 38001 - 75000 | Round hole, pad width 0.333 inch. |
SA | Trigger Housing | D28290-1-SA | Type 3B | November/1940 to December/1940 | 90001 - 160000 | Cloverleaf hole, pad width 0.156 inch. |
SA | Trigger Housing | D28290-12-SA | Type 8 | December/1942 to November/1944 | 1010001 - 3300000 | Cloverleaf hole, pad width 0.156 inch. |
SA | Trigger Housing | D28290-14-SA | Type 9 | November/1944 to January/1945 | 3300001 - 3450000 | Cloverleaf hole, pad width 0.156 inch. |
SA | Trigger Housing | D28290-16-SA | Type 10 | January/1945 to March/1945 | 3450001 - 3550000 | Cloverleaf hole, pad width 0.156 inch. |
SA | Trigger Housing | D28290-18-SA | Type 11 | March/1945 to October/1945 | 3550001 - 3888081 | Cloverleaf hole, pad width 0.156 inch. |
SA | Trigger Housing | D28290-1SA | Type 3A | October/1940 to November/1940 | 75001 - 90000 | Cloverleaf hole, pad width 0.156 inch. |
SA | Trigger Housing | D28290-2-SA | Type 4 | December/1940 to May/1941 | 160001 - 238000 | Cloverleaf hole, pad width 0.156 inch. |
SA | Trigger Housing | D28290-5-SA | Type 5 | May/1941 to July/1942 | 238001 - 744000 | Cloverleaf hole, pad width 0.156 inch. |
SA | Trigger Housing | D28290-7-SA | Type 6 | July/1942 to October/1942 | 744001 - 880000 | Cloverleaf hole, pad width 0.156 inch. |
SA | Trigger Housing | D28290-8-SA | Type 7 | October/1942 to December/1942 | 880001 - 1010000 | Cloverleaf hole, pad width 0.156 inch. |
SA | Trigger Pin | A13669 | N/A | January/1936 to December/1957 | 1 - 6100500 | |
WRA | Aperature | B8868-1 | Type 1 | December/1940 to January/1945 | 100101 - 2540999 | Parkerized stamped steel. May have punch mark on bottom surface. 60 degree crosshatch pattern on face. No tracks on either side of gear. |
WRA | Aperature | B8868-1 | Type 2 | January/1945 to June/1945 | 1600000 - 1640000 | WIN13 series. Same as Type 1 with exception to tracks cut on either side of teeth. |
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 | Bolt | D28287-1W.R.A. | N/A | June/1941 to June/1945 | 110001 - 2540999 | Extractor post hole and hole on bottom of bolt. |
WRA | Bolt | D28287-1WRA | N/A | December/1940 to June/1941 | 100101 - 110000 | Extractor post hole only. No hole in bottom of bolt. |
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 | Buttplate Assembly | C41012 | Type 1 | December/1940 to April/1942 | 100101 - 160000 | No cap, 4 checks in top row |
WRA | Buttplate Assembly | C64283 | Type 2 | April/1942 to June/1945 | 160001 - 2540999 | May be marked inside "2S". Cap, 12.5 squares in vertical row intersecting screw hole. |
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 | Elevating Pinion | N/A | Type 1 | December/1940 to January/1943 | 100101 - 1280000 | Short with 6-40NF thread, with flush nut. Early examples (to circa 46,000-47,00) were marked inside with the part number. |
WRA | Elevating Pinion | N/A | Type 3 | January/1943 to June/1945 | 1280000 - 2540999 | Long with 8-36 NF thread, with locking bar. |
WRA | Elevation Knob | N/A | Type 1A | December/1940 to June/1945 | 100101 - 1240000 | Checkered rim, early closed arrowheads. Later open arrowheads more common. |
WRA | Elevation Knob | N/A | Type 1C | September/1942 to June/1945 | 1240001 - 2540999 | Knurled rim, open arrowheads |
WRA | Extractor | N/A | N/A | December/1940 to June/1945 | 100101 - 2540000 | Blued throughout production. Punch marked. |
WRA | Extractor Spring and Plunger | B8886 | N/A | December/1940 to June/1945 | 100101 - 2540999 | Early may be blued. |
WRA | Firing Pin | B8879 | Type 1 | November/1940 to May/1942 | 100101 - 1200000 | Round cross section. May have rougher finish and punch mark. |
WRA | Firing Pin | B8879 | Type 2 | May/1942 to June/1945 | 1200001 - 2540999 | Half round cross section. May have rougher finish and punch mark. |
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. |