Thompson Illustrated Parts Breakdown

Thompson Model 1921A parts breakdown
Thompson Model 1921A

Part No.

1. Actuator.*
2. Barrel.
3. Bolt.
4. Breech Oiler (with Felt Pads).
5. Buffer.*
6. Buffet Pilot.
7, Disconnector.
8. Disconnector Spring.
9. Ejector.
10. Extractor.
11. Firing Pin.
12. Firing Pin Spring.

 13. Fore Grip, Vert / Horiz
14. Fore Grip Screw.
15. Frame
16. Frame Latch.
17. Frame Latch Spring
18. Grip Mount.
19. Hammer.
20. Hammer Pin.
21. Lock.
22. Magazine Catch.
23. Magazine Catch Spring.
24. Pivot Plate,
25. Rear Grip.
26. Rear Grip Screw.
27. Receiver.		 28. Recoil Spring. *
29. Rocker.
30. Rocker Pivot or Fire Control Lever.
31. Safety.
32. Sear.
33. Sear Spring.
34. Sear Lever.
35. Sear Lever Spring.
36. Trigger
37. T rigger Spring.
38. Trip.

* These parts of model 1921 do not interchange with corresponding parts of model 1928. See below for M1928A1 and model 1927 replacement parts.

 

Model M1928A1 Actuator, buffer and recoil spring

Unique Parts for model M1928A1

47. Actuator.
48. Buffer, Buffer Pilot and fiber disk.
49. Recoil Spring.

 

Unique parts for semi-auto Colt Thompson model 1927

39. Rocker.
40. RockerPivot.
41. Rocker Plunger.
42. Rocker Pin.
43. Rocker Spring.

 

Unique parts for the M1 Thompson

The M1A1 Thompson bolt has a fixed firing pin machined into the surface of the bolt.