Other Malfunctions

Some other malfunctions that can occur are as follows.

• Failure of the bolt to remain in a rearward position after the last round in the magazine is fired. Check for a bad magazine or short recoil.

• Failure of the bolt to lock in the rearward position when the bolt catch has been engaged. Check bolt catch; replace as required.

• Firing two or more rounds when the trigger is pulled and the selection lever is in the SEMI position. This indicates a worn sear, cam, or disconnector. Turn in to armorer to repair and replace trigger group parts as required.

• Trigger will not pull or return after release with the selector set in a firing position. This indicates that the trigger pin (Figure 2-16A)has backed out of the receiver or the hammer spring is broken. Turn in to armorer to replace or repair.

• Failure of the magazine to lock into the rifle (Figure 2-16B). Check the magazine and check magazine catch for damage. Turn in to armorer to adjust the catch; replace as required.

• Failure of any part of the bolt carrier group to function (Figure 2-16C). Check for incorrect assembly of components. Correctly clean and assemble the bolt carrier group, or replace damaged parts.

• Failure of the ammunition to feed from the magazine (Figure 2-16D). Check for damaged magazine. A damaged magazine could cause repeated feeding failures and should be turned in to armorer or exchanged.

NOTE: Additional technical information on troubleshooting malfunctions and repairing components is contained in the organizational and DS maintenance publications and manuals.

Figure 2-16. Other Possiable Malfunctions.

A. Check receiver for broken hammer spring..

B. Check magazine catch adjustment for damage.

Figure 2-16. Other Possiable Malfunctions.

A. Check receiver for broken hammer spring..

B. Check magazine catch adjustment for damage.

Army Tech Manual M500 Mossberg

C. Incorreetiy assembled bolt parts.

D. Bent and spread magazine lips.

C. Incorreetiy assembled bolt parts.

D. Bent and spread magazine lips.

Army Tech Manual M500 Mossberg
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