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 | Elevating Pinion | N/A | Type 1 | January/1936 to March/1942 | 1 - 540000 | Short with 6-40NF thread, with flush nut. Early examples (to circa 46,000-47,00) were marked inside with the part number. |
SA | Elevating Pinion | N/A | Type 2 | March/1942 to November/1942 | 540000 - 1000000 | Short, same as Type 1 but with locking bar substituted for flush nut, 6-40NF thread. |
SA | Elevating Pinion | N/A | Type 3 | August/1942 to June/1945 | 800000 - 3800000 | Long with 8-36 NF thread, with locking bar. |
SA | Elevating Pinion | N/A | Type 4 | June/1945 to December/1957 | 3800001 - 6100500 | Postwar with 8-36NF thread, no locking bar |
SA | Elevation Knob | N/A | Type 1A | January/1936 to July/1940 | 1 - 47000 | Part number inside, checkered rim with closed arrowheads. |
SA | Elevation Knob | N/A | Type 1B | June/1940 to September/1942 | 46000 - 850000 | No part number, checkered rim with closed arrowheads. |
SA | Elevation Knob | N/A | Type 1C | September/1942 to October/1945 | 850000 - 3888081 | Knurled rim, closed arrowheads. |
SA | Elevation Knob | N/A | Type 2 | January/1952 to December/1957 | 4206000 - 6099905 | Postwar, integral part of pinion. May be marked "SA" in late 1950s+ |
SA | Extractor | N/A | N/A | January/1936 to December/1957 | 1 - 6100500 | Blued or Parkerized during WWII, all Parkerized after WWII. |
SA | Extractor Spring and Plunger | B8886 | N/A | January/1936 to December/1957 | 1 - 6100500 | Early may be blued. |
SA | Firing Pin | B8879 | Type 1 | January/1936 to December/1941 | 1 - 425000 | Round cross section. |
SA | Firing Pin | B8879 | Type 2 | December/1941 to December/1957 | 425001 - 6100500 | Half round cross section. |
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. |
SA | Front Hand Guard | C46006 | N/A | January/1936 to August/1940 | 1 - 50000 | Marked C46006 on inside. |
SA | Front Hand Guard | C64245 | N/A | August/1940 to December/1957 | 50001 - 6100500 | |
SA | Front Site | B147427 | Type 3A | July/1940 to December/1957 | 50001 - 6100500 | Between 0.625 and 0.687 inches wide at blades. Smaller dimension usually associated with WWII. |
SA | Front Site | B8882 | Type 2A | January/1936 to July/1940 | 81 - 50000 | Straight guard blades. Front site blades not rounded, rear of blade is quarter circle shaped. No vertical slot it guard blade. |
SA | Front Site | B8882 | Type 2B | January/1936 to July/1940 | 81 - 50000 | Flared guard blades. Front site blades not rounded, rear of blade is quarter circle shaped. No vertical slot it guard blade. |
SA | Front Site | Unknown | Type 1 | January/1936 to January/1936 | 1 - 80 | Single blade without guards, gas trap pre production rifles only. |
SA | Front Site Screw | N/A | Type 1 | January/1936 to July/1940 | 1 - 50000 | Gas Traps only. |
SA | Front Site Screw | N/A | Type 2 | July/1940 to February/1943 | 50001 - 1360000 | Rebated Allen socked head, used with seal. |
SA | Front Site Screw | N/A | Type 3 | March/1943 to December/1957 | 1360001 - 6100500 | Non-rebated head. Head may be smooth or knurled. |
SA | Gas Cylinder | D-28289-1 | Type 1C | March/1940 to July/1940 | 32001 - 50000 | Gas Trap. No Flutes, .50 inch front sight base, flat top on rear ring, marked "D-28289-1" top of rear ring. |