B6 Malfunctions And Corrections

Table B-1 contains pertinent information for the operator and serves as an aid to personnel who are responsible for restoring worn, damaged, or inoperative materiel to a satisfactory condition. If the weapon becomes unserviceable, it must be turned in for service by a school-trained National Match armorer.

MALFUNCTION

CAUSE

CORRECTION

FAILURE TO LOAD

DIRTY OR DEFORMED MAGAZINE

1. CLEAN OR REPUCE

DAMAGED MAGAZINE TUBE

2. REPUCE MAGAZINE

DIRTY MAGAZINE

3. CLEAN

DAMAGED OR BROKEN MAGAZINE SPRING

4. REPUCE MAGAZINE

DAMAGED OR BROKEN FOLLOWER

5. REPUCE MAGAZINE

LOOSE OR DAMAGED FLOOR PLATE

6. REPUCE MAGAZINE

MALFUNCTION

CAUSE

CORRECTION

MAGAZINE INSERTS WITH DIFFICULTY

BENT OR DAMAGED MAGAZINE

7. REPLACE MAGAZINE

EXCESSIVE DIRT IN RECEIVER

8. CLEAN

ROUND NOT COMPLETELY SEATED IN MAGAZINE

9. REMOVE ROUND; INSERT PROPERLY

DEFORMED OR OPERATING ROD SPRING GUIDE

10. EVACUATE TO AUTHORIZED ARMORER

DAMAGED MAGAZINE LATCH

11. EVACUATE TO AUTHORIZED ARMORER

MOVEMENT

RESTRICTED

12. CHECK MOVEMENT; CLEAN IF NECESSARY; IF BENT OR DISTORTED, EVACUATE TO AUTHORIZED ARMORER

MAGAZINE CANNOT BE RETAINED IN WEAPON

MAGAZINE LATCH DAMAGED

13. EVACUATE TO AUTHORIZED ARMORER.

MAGAZINE LATCH SPRING DAMAGED

14. EVACUATE TO AUTHORIZED ARMORER

MAGAZINE LATCH PLATE DAMAGED OR MISSING

15. REPLACE MAGAZINE

DEFORMED OR DAMAGED OPERATING ROD SPRING GUIDE

16. EVACUATE TO AUTHORIZED ARMORER

LOCKING RECESS AT TOP FRONT OF

17. REPLACE MAGAZINE

MAGAZINE NOT FULLY INSTALLED

18. REMOVE; INSTALL CORRECTLY (MAKE SURE LATCH CLICKS)

FAILURE TO FEED

WEAK OR BROKEN SPRING

19. REPLACE MAGAZINE

DAMAGED MAGAZINE

20. REPLACE MAGAZINE

DIRTY AMMUNITION AND/OR MAGAZINE

23. CLEAN AMMUNITION AND/OR MAGAZINE

SHORT RECOIL

DIRTY AMMUNITION AND/OR MAGAZINE

WEAK OR BROKEN

22. (SEE SHORT RECOIL)

23. CLEAN AMMUNITION AND/OR MAGAZINE

24. EVACUATE TO

OPERATING ROD SPRING AUTHORIZED ARMORER

RESTRICTED MOVEMENT OF, OR DAMAGED OPERATING ROD25.

25. EVACUATE TO AUTHORIZED ARMORER

BOLT FAILS TO LOCK

CARTRIDGE CASE HOLDING BOLT OUT OF BATTERY

DIRTY CHAMBER

EXTRACTOR DOES NOT SNAP OVER RIM OF CARTRIDGE CASE

FROZEN OR BLOCKED EJECTOR SPRING AND PLUNGER

RESTRICTED MOVEMENT OF, OR DAMAGED OPERATING ROD SPRING

BOLT NOT FULLY ROTATED AND LOCKED IN RECEIVER

WEAK OR BROKEN OPERATING ROD SPRING

DAMAGED RECEIVER

26. PULL BOLT CLOSE ASSEMBLY TO REAR AND REMOVE DEFORMED CARTRIDGE; CLEAN AMMUNITION AND/OR BARREL AND CHAMBER

27. CLEAN CHAMBER

28. EVACUATE TO AUTHORIZED ARMORER

29. EVACUATE TO AUTHORIZED ARMORER

30. EVACUATE TO AUTHORIZED ARMORER

31. EVACUATE TO AUTHORIZED ARMORER

32. EVACUATE TO AUTHORIZED ARMORER

33. EVACUATE TO AUTHORIZED ARMOR

FAILURE TO FIRE

BOLT NOT FULLY FORWARD AND LOCKED

34. (SEE BOLT FAILS TO LOCK)

MALFUNCTION

CAUSE

CORRECTION

FAILURE TO FIRE (CONTINUED)

DEFECTIVE AMMUNITION

35. REMOVE AMMUNITION

FIRING PIN WORN, DAMAGED, OR MOVEMENT RESTRICTED

36. EVACUATE TO AUTHORIZED ARMORER

BROKEN HAMMER

37. EVACUATE TO AUTHORIZED ARMORER

WEAK OR BROKEN HAMMER SPRING

38. EVACUATE TO AUTHORIZED ARMORER

HAMMER AND TRIGGER LUGS OR SEAR WORN OR BROKEN, CAUSING HAMMER TO RIDE THE BOLT ASSEMBLY FORWARD

39. EVACUATE TO AUTHORIZED ARMORER

SHORT RECOIL

GAS PLUG LOOSE OR MISSING

40. TIGHTEN PLUG IF LOOSE; EVACUATE TO AUTHORIZED ARMORER IF MISSING

RESTRICTED MOVEMENT OF OPERATING ROD ASSEMBLY

41. EVACUATE TO AUTHORIZED ARMORER

BOLT BINDING

42. CLEAN

GAS CYLINDER LOCK NOT FULLY INSTALLED

43. EVACUATE TO AUTHORIZED ARMORER

GAS PISTON RESTRICTED

44. EVACUATE TO AUTHORIZED ARMORER

DAMAGED CONNECTOR ASSEMBLY

45. EVACUATE TO AUTHORIZED ARMORER

PARTIALLY CLOSED SPINDLE VALVE

46. EVACUATE TO AUTHORIZED ARMORER

DEFECTIVE AMMUNITION

47. REPLACE AMMUNITION

FAILURE TO EXTRACT

SPINDLE VALVE CLOSED

48. EVACUATE TO AUTHORIZED ARMORER

CARTRIDGE SEIZED IN CHAMBER

49. REMOVE

MALFUNCTION

CAUSE

EXTRACT

(CONTINUED)

SHORT RECOIL

50. (SEE SHORT RECOIL)

DAMAGED OR DEFORMED EXTRACTOR

51. EVACUATE TO AUTHORIZED ARMORER

WEAK, DEFORMED, OR FROZEN EXTRACTOR PLUNGER ASSEMBLY

52. EVACUATE TO AUTHORIZED ARMORER

RUPTURED OR SEPARATED CARTRIDGE

53. EVACUATE TO AUTHORIZED ARMORER

FAILURE TO EJECT

SHORT RECOIL

54. (SEE SHORT RECOIL)

WEAK, DEFORMED OR FROZEN EXTRACTOR PLUNGER ASSEMBLY

55. EVACUATE TO AUTHORIZED ARMORER

FAIL TO HOLD BOLT REARWARD

DAMAGED OR DEFORMED MAGAZINE FOLLOWER

56. REPLACE MAGAZINE

DAMAGED BOLT LOCK

57. EVACUATE TO AUTHORIZED ARMORER

BOLT LOCK MOVEMENT RESTICTED

58. EVACUATE TO AUTHORIZED ARMORER

WEAK OR BROKEN MAGAZINE SPRING

59. REPLACE MAGAZINE

Table B-1. M21 malfunctions and corrections (continued)

Was this article helpful?

0 0

Post a comment