USCARBINECAL30M1.com M1 Carbine Components Listing by Part Group
* All dates and serial numbers are approximate *
USCARBINECAL30M1.com M1 Carbine Components List
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| UEF | Safety | Type 2 | Unmarked | 1360000 - 4044999 | |
| UEF | Safety | Type 3 | Unmarked | 2353520 - 6199688 | |
| UEF | Sear | Type 1 | ".U." | 1350000 - 2619999 | |
| UEF | Sear | Type 2 | "G.U.", ".U." | 2620000 - 6199688 | |
| UEF | Sear Spring | Type 1 | Unmarked | 1350000 - 1369999 | |
| UEF | Sear Spring | Type 2 | Unmarked | 1370000 - 6199688 | |
| UEF | Trigger | Type 2 | JU, ".U.", U w/Trident | 1350000 - 6199688 | |
| UEF | Trigger Housing | Type 1 | ".U." | 1350000 - 1351999 | |
| UEF | Trigger Housing | Type 2 | ".U." | 1352000 - 1389999 | |
| UEF | Trigger Housing | Type 3 | ".U." | 1390000 - 4049999 | |
| UEF | Trigger Housing | Type 4 | ".U." | 2352520 - 6099688 | |
| UEF | Trigger Housing Pin | Type 1 | Unmarked | 1350000 - 1357999 | |
| UEF | Trigger Housing Pin | Type 2 | Unmarked | 1358000 - 6199688 | |
| UEF | Trigger Spring | Type 2 | Unmarked | 1350000 - 6199688 | |
| WRA | Hammer | Type 1 | W | 1000000 - 1088999 | |
| WRA | Hammer | Type 2 | W | 1089000 - 1279999 | |
| WRA | Hammer | Type 3 | W, WS | 1280000 - 7279999 | |
| WRA | Hammer | Type 4 | W | 7280000 - 7369669 | |
| WRA | Hammer Pin | N/A | Unmarked | 1000000 - 7369669 | |
| WRA | Hammer Plunger | N/A | Unmarked | 1000000 - 7369669 | |
| WRA | Hammer Plunger | Type 2 | Unmarked | 1280000 - 7369669 | |
| WRA | Hammer Spring | Type 1 | Unmarked | 1000000 - 1279999 | |
| WRA | M.C. / Safety Spring & Plunger | Type 1 | Unmarked | 1000000 - 5799999 | |
| WRA | M.C. / Safety Spring & Plunger | Type 2 | Unmarked | 5800000 - 7369669 | |
| WRA | Magazine Catch | Type 1 | W | 1000000 - 1039999 | |
| WRA | Magazine Catch | Type 1A | W | 1040000 - 1099999 | |
| WRA | Magazine Catch | Type 2A | W | 1100000 - 5599000 | |
| WRA | Magazine Catch | Type 3 | ".EW.", W | 5600000 - 7299999 | |
| WRA | Magazine Catch | Type 4 | W | 7300000 - 7369669 | |
| WRA | Safety | Type 1 | Unmarked | 1000000 - 1074999 | Checkered |
| WRA | Safety | Type 3 | EW, SW | 1300000 - 7299999 | |
| WRA | Safety | Type 4 | EW | 7300000 - 7369669 | |
| WRA | Sear | Type 1 | W | 1000000 - 5599999 | |
| WRA | Sear | Type 2 | W | 5600000 - 7279999 | |
| WRA | Sear | Type 3 | W | 7280000 - 7369669 | |
| WRA | Sear Spring | Type 1 | Unmarked | 1000000 - 1039999 | |
| WRA | Sear Spring | Type 2 | Unmarked | 1040000 - 7369669 | |
| WRA | Trigger | Type 1 | W | 1000000 - 1019999 | |
| WRA | Trigger | Type 2 | Inverted W, W | 1020000 - 7369669 | |
| WRA | Trigger Housing | Type 1 | O, W | 1000000 - 1011999 | |
| WRA | Trigger Housing | Type 2 | W | 1012000 - 1219999 | |
| WRA | Trigger Housing | Type 3 | W | 1220000 - 5699000 | |
| WRA | Trigger Housing | Type 5 | W | 5700000 - 7279999 | |
| WRA | Trigger Housing | Type 6 | W, Ax | 7280000 - 7369669 | Marking Ax: x = numerical digit. |
| WRA | Trigger Housing Pin | Type 1 | Unmarked | 1000000 - 1029999 | |
| WRA | Trigger Housing Pin | Type 2 | Unmarked | 1030000 - 7369669 | |
| WRA | Trigger Spring | Type 1 | Unmarked | 1000000 - 1349999 | |
| WRA | Trigger Spring | Type 2 | Unmarked | 1000000 - 7369669 | |