Solid Film Lubricant (SFL) is the only authorized touchup for the Ml 16A2 rifle and M4/M4A1 carbines and may be used on up to one third of the exterior finish of the weapon. FOR ARMY CONUS USE ONLY AND AIR FORCE TRAINING WEAPONS ONLY: SFL may be used as touchup without limitation on the upper receiver and barrel assembly. This is to say that units which DO NOT fall under the category of Divisional Combat Units or rapid deployment type units may have up to 100 percent of the exterior surface of the upper receiver and barrel assembly protected with SFL if necessary.


This task covers:

a. Disassembly b. Cleaning c. Inspection/Repair

d. Lubrication e. Reassembly


(ARMY) Small Arms Repairman Tool Kit

(item 3, app B) Bolt Carrier Key Tool (item 11, figure C-17)


TM 9-1005-319-10 (operator's manual)

Equipment Conditions

2-34 Bolt carrier assembly removed

General Safety Instructions Bolt cam pin must be installed or rifle will blow up while firing the first round. If the bolt cam pin is not installed, injury to, or death of, personnel may result.

Do not interchange bolt assemblies from one rifle to another. Doing so may result in injury to, or death of, personnel.



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