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)
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