SA | Gas Cylinder | D-35449-1 | Type 2A | July/1940 to August/1941 | 50001 - 315000 | .50 inch front sight base, flat top on rear ring, marked "D-35449-SA" right side of rear ring. |
SA | Gas Cylinder | D28289 | Type 1A | January/1936 to January/1940 | 81 - 25000 | Gas Trap. Flutes .50 inch front sight base, flat top on rear ring, marked "D28289" top of rear ring. |
SA | Gas Cylinder | D28289 | Type 1B | January/1940 to March/1940 | 25001 - 32000 | Gas Trap. No Flutes, .50 inch front sight base, flat top on rear ring, unmarked. |
SA | Gas Cylinder | D35449 | Type 2B | August/1941 to May/1943 | 315001 - 1600000 | .50 inch front sight base, flat top on rear ring, unmarked. |
SA | Gas Cylinder | D35449 | Type 2C | May/1943 to December/1957 | 1600001 - 6100500 | .575-.580 inch front sight base, flat top on rear ring, unmarked. |
SA | Gas Cylinder Lock | B147426 | Type 1 | July/1940 to March/1945 | 50000 - 3592000 | Front face chamfered,no hump, unmarked. 1.225 - 1.335 inches high. Unmarked. |
SA | Gas Cylinder Lock | B147426 | Type 2 | March/1945 to October/1945 | 3592301 - 3888999 | Front face has no chamfer. Hardened and often marked with "M". |
SA | Gas Cylinder Lock | B147426 | Type 3A | January/1952 to December/1957 | 4200001 - 6100500 | Front face not chamfered. Hardened, high hump with square edges. May be punch marked, otherwise unmarked. 1.455 inches high. |
SA | Gas Cylinder Lock | B147426 | Type 3B | January/1955 to December/1957 | 5793000 - 6100500 | Front face not chamfered. Hardened, high hump with round edges.Unmarked. 1.455 inches high. |
SA | Gas Cylinder Lock Screw(Plug) | B147428 | Type 1 | July/1940 to January/1944 | 50000 - 2500000 | Single slot, no valve/poppet. Unmarked. |
SA | Gas Cylinder Lock Screw(Plug) | B7310079 | Type 3 | January/1944 to December/1957 | 2500001 - 6100500 | Return poppet valve, cross shaped slot. Various markings observed: "B S", "O", "P", small hexagon "P", large hexagon "P", "P" with crescent moon, "PBV", "P O", "P X", small triangle "P", large triangle "P", "T", "T A", "T O", "T PAX" and octagon. |
SA | Gas Cylinder Lock Screw(Plug) | S B147428 | Type 2 | April/1943 to January/1944 | 1470000 - 2500000 | Non-return valve, cross shaped slot. May show manufacture code. For use with M7 grenade launcher. |
SA | Hammer | C 46008 | Type 1A | January/1936 to April/1940 | 1 - 35000 | Drawing number on right side, early hooks, no tooling hole. |
SA | Hammer | C 46008-1 | Type 1B | April/1940 to August/1940 | 35001 - 55000 | Drawing number on right side, early hooks, tooling hole. |
SA | Hammer | C46008-1 | Type 1C | June/1940 to September/1940 | 45000 - 60000 | Drawing number on right side, early hooks, tooling hole. |
SA | Hammer | C46008-1SA | Type 1D | September/1940 to September/1940 | 60000 - 65000 | Drawing number on right side, early hooks, tooling hole. |
SA | Hammer | C46008-2 SA | Type 2B | September/1940 to June/1942 | 65001 - 680000 | Drawing number either on right side or face, late hooks, no tooling hole. |
SA | Hammer | C46008-2SA | Type 2A | September/1940 to June/1942 | 65001 - 680000 | Drawing number either on right side or face, late hooks, not tooling hole. |
SA | Hammer | C46008-3 SA | Type 2C | June/1942 to June/1943 | 680001 - 1630000 | Drawing number on face, late hooks, no tooling hole. |
SA | Hammer | C46008-5 SA | Type 2D | June/1943 to August/1944 | 1630001 - 3100000 | Drawing number on face, late hooks, no tooling hole. |
SA | Hammer | C46008-7 SA | Type 2E | August/1944 to January/1945 | 3100001 - 3400000 | Drawing number on face, late hooks, no tooling hole. |
SA | Hammer | C46008-8 SA | Type 2F | January/1945 to March/1945 | 3400001 - 3650000 | Drawing number on face, late hooks, no tooling hole. |
SA | Hammer | C46008-9 SA | Type 2G | March/1945 to October/1945 | 3650001 - 3888081 | Drawing number on face, late hooks, no tooling hole. |
SA | Hammer | SA 5546008 | Type 2J | January/1955 to December/1957 | 5793848 - 6100500 | Drawing number on face, late hooks, no tooling hole. |
SA | Hammer | SA C46008 | Type 2H | January/1952 to December/1954 | 4200001 - 4399999 | Drawing number on face, late hooks, no tooling hole. |
SA | Hammer | SA C5546008 | Type 2K | January/1952 to October/1954 | 4200000 - 5320000 | Drawing number on face, late hooks, no tooling hole. |
SA | Hammer | SA D5546008 | Type 2I | August/1952 to December/1955 | 5000000 - 5800000 | Drawing number on face, late hooks, no tooling hole. |
SA | Hammer Pin | A13668 | N/A | January/1936 to December/1957 | 1 - 6100500 | |
SA | Hammer Spring | B8887 | N/A | January/1936 to November/1957 | 1 - 6100500 | 20 coils |
SA | Hammer Spring Housing | B8883 | Type 1 | January/1936 to July/1940 | 1 - 50000 | 5 degree rounded bevel at ends of safety slot. |
SA | Hammer Spring Housing | B8883 | Type 2 | July/1940 to December/1957 | 50001 - 6100500 | 45 degree slant cut at ends of safety slot |
SA | Hammer Spring Plunger | B8880 | Type 1 | January/1936 to October/1945 | 1 - 3888081 | 1.542 inches long, "winged" head, 0.459 inches wide. |
SA | Hammer Spring Plunger | B8880 | Type 2 | March/1944 to December/1957 | 2700000 - 6100500 | 1.50 inches long, "wingless" head, 0.40 inches wide. |
SA | Handguard Clip | B 8870-3 | Type 1A | January/1936 to May/1940 | 1 - 40000 | Drawing number stamped. Milled with arched profile. Grove centered on band length wise .07 inches wide by .02 inches deep. |
SA | Handguard Clip | N/A | Type 1B | May/1941 to August/1942 | 40001 - 780000 | Milled with arched profile. Grove centered on band length wise .07 inches wide by .02 inches deep. |
SA | Handguard Clip | N/A | Type 2 | August/1942 to August/1942 | 780001 - 800000 | Milled with arched profile. No Grove. |
SA | Handguard Clip | N/A | Type 3 | August/1942 to December/1957 | 800001 - 6100500 | Stamped steel, flat profile, no groove. |
SA | Handguard Ferrule | N/A | Type 1 | January/1936 to June/1940 | 1 - 50000 | Unmarked. Front protruding lip .156 inches from front barrel hole. |
SA | Handguard Ferrule | N/A | Type 2 | June/1940 to December/1957 | 50001 - 6100500 | Lip protruding .06 inches from rear barrel hole. |
SA | Handguard Liner | B8893 | Type 1 | January/1936 to September/1938 | 1 - 4000 | Marked B 8893. No fron ro rear hole, no notches. Gas Trap only. |
SA | Handguard Liner | B8893 | Type 2 | September/1948 to July/1940 | 4001 - 50000 | Marked B 8898-1. Front hole is .350 inches from edge, rear hole is .490 inches from edge. No notch. Gas Trap only. |
SA | Handguard Liner | B8893 | Type 3 | July/1940 to December/1957 | 50001 - 6100500 | Unmarked. Front hole is .350 inches from edge, rear hole is .490 inches from edge. Notch is .70 inches wide by .15 inches deep. |
SA | Handguard Liner | B8893 | Type 4 | November/1945 to December/1957 | 3889000 - 6100500 | Unmarked. No front or rear hole. Notch is .70 inches wide by .15 inches deep. |
SA | Lower Band | C46000 | Type 1A | January/1936 to April/1939 | 1 - 10000 | Milled arched profile with central groove and scallops. Marked C 46000. |
SA | Lower Band | C46000 | Type 1B | April/1939 to October/1940 | 10001 - 70000 | Milled arched profile with central groove and scallops. Unmarked. |
SA | Lower Band | C46000 | Type 2 | October/1940 to June/1943 | 70001 - 1650000 | Stamped arched profile with no groove or scallops. Unmarked. |
SA | Lower Band | C46000 | Type 3 | June/1943 to December/1957 | 1650001 - 6100500 | Stamped flat profile with no groove or scallops. Unmarked. |
SA | Lower Band Pin | N/A | Type 1 | January/1936 to December/1951 | 1 - 3888999 | Solid pin. |
SA | Lower Band Pin | N/A | Type 2 | January/1952 to December/1957 | 3889000 - 6100500 | Roll pin. |
SA | Operating Rod | 6535382 SA | 10 | June/1945 to December/1957 | 4200000 - 6100500 | Straight bolt lug,5/16 inch radius cut, flat side, marking on bottom. May have "SA" substituted for subcontractor initials |