IHC | Receiver | D6528291-G | N/A | January/1953 to December/1953 | 4400000 - 4660000 | |
IHC | Receiver | D6528291-H | N/A | January/1953 to January/1953 | 4400000 - 4660000 | |
IHC | Receiver | D6528291-I | N/A | January/1953 to December/1953 | 4400000 - 4660000 | |
IHC | Receiver | D6528291-J | N/A | January/1954 to December/1954 | 5000501 - 5278245 | |
IHC | Receiver | D6528291-L | N/A | January/1954 to December/1954 | 5000501 - 5278245 | |
IHC | Receiver | D6528291-M | N/A | January/1954 to December/1954 | 5000501 - 5278245 | |
IHC | Receiver | D6528291-N | N/A | January/1954 to December/1954 | 5000501 - 5278245 | |
IHC | Receiver | D652891-42 | N/A | January/1953 to December/1953 | 4400000 - 4660000 | |
IHC | Receiver | D652891-43 | N/A | January/1953 to December/1953 | 4400000 - 4660000 | |
IHC | Receiver | IHC F 6528291 | N/A | January/1953 to December/1953 | 4400000 - 4660000 | |
IHC | Receiver | IHCD652891-A | N/A | January/1953 to December/1953 | 4400000 - 4660000 | |
SA | Barrel | D28286 | N/A | January/1936 to June/1940 | 1 - 50000 | Gas Trap barrel. |
SA | Barrel | D35448 | N/A | July/1940 to December/1957 | 50001 - 6100500 | Generally dated to within 3 months of Receiver manufacture date. |
SA | Bullet Guide | B8875 | Type 1A | January/1936 to April/1939 | 1 - 9999 | Forged and milled, narrow slot. Marked "B-8875". |
SA | Bullet Guide | B8875 | Type 1B | April/1939 to April/1940 | 10000 - 35000 | Forged and milled, narrow slot. Marked "B8875". |
SA | Bullet Guide | B8875 | Type 1C | April/1940 to September/1940 | 35001 - 65000 | Forged and milled, narrow slot. Marked "B8875SA". |
SA | Bullet Guide | B8875 | Type 2A | September/1940 to August/1941 | 65001 - 300000 | Forged and milled, narrow slot. Marked "B8875-1SA". |
SA | Bullet Guide | B8875 | Type 2B | August/1941 to March/1943 | 300001 - 1400000 | Forged and milled, wide slot. Not marked. |
SA | Bullet Guide | B8875 | Type 3 | March/1943 to May/1944 | 1400001 - 2850000 | Forged and milled, wide slot. Not marked. Indentations on right and left side at bottom 90 degree bend. |
SA | Bullet Guide | B8875 | Type 4 | May/1944 to October/1945 | 2850001 - 3888999 | Stamped steel, wide slot. Not marked. Top end folded back and formed. |
SA | Bullet Guide | B8875 | Type 5 | November/1945 to December/1957 | 3889000 - 6100500 | Stamped steel, wide slot. Not marked. 0.25 notch in upper left side |
SA | Clip Ejector | C46018 | N/A | January/1936 to December/1957 | 1 - 6100500 | Early were blued, late were parkerized. |
SA | Clip Latch | C46011 | Type 1A | January/1936 to July/1940 | 81 - 50000 | Rounded front end at top, marked "-O" or "O" (used primarily with gas trap rifles) |
SA | Clip Latch | C46011 | Type 1B | July/1940 to March/1944 | 50001 - 2720000 | Rounded front end at top, unmarked |
SA | Clip Latch | C46011 | Type 2 | November/1943 to December/1957 | 2110000 - 6100500 | |
SA | Clip Latch Pin | N/A | N/A | January/1936 to December/1957 | 1 - 6100500 | 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. |
SA | Clip Latch Spring | N/A | N/A | January/1936 to December/1957 | 1 - 6100500 | 0.03 inch steel wire, 5 coils, outside diameter 0.26 inch. White finish is original, Parkerized indicates refinishing. |
SA | Follower and Slide | N/A | Type 1A | January/1936 to November/1939 | 1 - 20000 | Marked with "1". |
SA | Follower and Slide | N/A | Type 1B | November/1939 to May/1940 | 20001 - 39000 | Marked with "2". |
SA | Follower and Slide | N/A | Type 1C | May/1940 to May/1941 | 39001 - 240000 | Marked with "3". |
SA | Follower and Slide | N/A | Type 1D | May/1940 to May/1941 | 39001 - 240000 | Unmarked |
SA | Follower and Slide | N/A | Type 2A | May/1941 to October/1941 | 240001 - 350000 | Unmarked. |
SA | Follower and Slide | N/A | Type 2B | October/1941 to July/1942 | 350001 - 710000 | Marked with "8". |
SA | Follower and Slide | N/A | Type 2C | July/1942 to October/1943 | 710001 - 2000000 | Marked with "11". |
SA | Follower and Slide | N/A | Type 2D | October/1943 to March/1945 | 2000001 - 3650000 | Marked with "12". |
SA | Follower and Slide | N/A | Type 2E | March/1945 to October/1945 | 3650001 - 3888081 | Marked with "13". |
SA | Follower and Slide | N/A | Type 2F | October/1945 to December/1957 | 3888082 - 6100500 | Unmarked. |
SA | Follower Arm | B8869 | Type 1 | January/1936 to September/1939 | 1 - 15500 | Single triangular bevel on right side. Unmarked. |
SA | Follower Arm | B8869 | Type 2 | September/1939 to March/1940 | 15501 - 33000 | Double bevel, stamped "B8869". |
SA | Follower Arm | B8869 | Type 3 | March/1940 to July/1941 | 33001 - 290000 | Unmarked. Single shallow bevel on left side above pin hole. Follower arm lugs were rounded. |
SA | Follower Arm | B8869 | Type 4 | July/1941 to October/1945 | 290001 - 3888999 | No bevel, rounded follower arm pin lugs. May ahve raised "S" marking as well as number stamped indicating drop forge used. |
SA | Follower Arm | B8869 | Type 4 | November/1945 to December/1957 | 3889000 - 6100500 | No bevel, rounded follower arm pin lugs. Unmarked. |
SA | Follower Arm Pin | 13667 | Type 3 | November/1945 to December/1957 | 3889000 - 6100500 | No rebate on either end, straight shaft. |
SA | Follower Arm Pin | A13667 | Type 1 | January/1936 to December/1941 | 1 - 429000 | 0.15 in rebate at end. |
SA | Follower Arm Pin | A13667 | Type 2 | December/1941 to October/1945 | 429001 - 3888999 | 0.15 in rebate at end, 0.07 in at top. |
SA | Follower Rod | C46014 | Type 1A | January/1936 to November/1940 | 1 - 79000 | Drawing number on rod. Short fork. 14 vertical knurls, round behind shoulder. Used with compensating spring. |
SA | Follower Rod | C46014 | Type 1B | January/1936 to November/1940 | 1 - 79000 | No drawing number on rod. Short fork, 14 vertical knurls, round behind shoulder. Used with compensating spring. |
SA | Follower Rod | C64331 | Type 2 | October/1940 to February/1941 | 70000 - 190000 | Short fork. Drawing number not marked, round behind shoulder. No compensating spring. |
SA | Follower Rod | C64331 | Type 4 | February/1941 to January/1944 | 190001 - 2500000 | Stamped sheet metal. Short fork plate riveted. No marking. |
SA | Follower Rod | C64331 | Type 5 | January/1944 to December/1957 | 2500001 - 6100500 | Stamped sheet metal. Long fork plate riveted. No marking. Grooves/knurls eliminated. |