Lower Receiver And Extension AatwiBtY CONT

LOCATION ITEM ACTION REMARKS

DISASSEMBLY (CONT)

g. Buffer assembly (14) Press buffer assembly in. Using and action spring (15) screwdriver, depress buffer retainer and release buffer (14) and action spring (15). Remove buffer assembly (14) and action spring (15) from receiver while depressing the retainer.

M16 Buffer Assembly Image

PUSH BUFFER ASSEMBLY IN ABOUT 1/4 INCH

M16 Rifle Lower Receiver Diagram

DEPRESS

BUFFER

RETAINER

REMOVE BUFFER AND ACTION SPRING

PUSH BUFFER ASSEMBLY IN ABOUT 1/4 INCH

DEPRESS

BUFFER

RETAINER

REMOVE BUFFER AND ACTION SPRING

NOTE

Early type buffer assembly must be replaced.

M16 Rifle Lower Receiver Diagram

INSPECTION

Lower Receiver and Extension Assembly a. Buffer assembly

Lower Receiver and Extension Assembly

M16 Rifle Lower Receiver Diagram

The buffer assembly must not be cracked between hole and end of housing.

Lower Receiver BlueprintM16 Lower With Sear Pin Hole

Some old buffers (1) have a pin through hole which protrudes equally on each side approximately 1732 of an inch.

Some buffers (2) have a hole in the housing but no pin.

New buffers (3) do not have a hole in buffer body or a pin.

LOCATION

ITEM

ACTION

REMARKS

b. Action spring

The free length of the action spring must be between 11 3/4 inches minimum and 13 1/2 inches maximum.

FREE LENGTH

FREE LENGTH

c. Lower receiver (without Inspect serial number for further disassembly) legibility.

If the serial number is hard to read, notify support maintenance.

M16 Rifle Lower Receiver Diagram

NOTE

Only general support maintenance is authorized to restamp the serial number.

NOTE

Only general support maintenance is authorized to restamp the serial number.

Inspect for missing or damaged parts. Inspect finish of lower receiver for shiny spots.

Touch up with solid film lubricant.

Lower Receiver and Extension Assembly

All authorized items

Replace if unserviceable.

Perform test on page 2-44. Test must not fail. Evacuate any damaged parts to direct support maintenance.

Lower Receiver and Extension Assembly

Use CLP

Apply a light coat of CLP (item 5, app D) on all metal components.

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