Lower Receiver Parts and kits
AR-15 M-16 Lower Receiver Parts
Lower receiver parts
Lower Receiver parts kits and parts for your stripped lower
As of May of 1986 there can be no new machine guns made for the civilian population. M-16 parts are available only to those individuals with Form 4’s or FFL’s on file. We do not sell any conversion parts, only replacement parts for registered machine guns. Having M-16 parts in your AR-15 type rifle can be construed as a felony.  If you have any questions contact BATFE at 1-800-ATF-GUNS.

 

Includes everything that can go inside your stripped lower receiver. Parts Include fire control group, the pins
and springs for the fire control group, bolt catch assy., mag catch assy., front pivot pin, rear takedown
pin, 2 takedown pin springs, 2 takedown pin detents, A-2 pistol grip, pistol grip screw, pistol grip screw
washer, buffer detent, and buffer detent spring.

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Lower Receiver Parts Kit
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lowerkit

AR-15 Lower Parts Kit (semi auto)

Includes everything that goes inside your stripped lower receiver. Includes fire control group, the pins and springs for the fire control group, bolt catch assy., mag catch assy., front pivot pin, rear takedown pin, 2 takedown pin springs, 2 takedown pin detents, A-2 pistol grip, pistol grip screw, pistol grip screw washer, buffer detent, and buffer detent spring.

Buttstock Buffer Spring
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lower receiver diagram
Lower receiver diagram. 
AR-15 or M-16 Buttstock Buffer Spring Standard Length.
This is the Standard length Buffer Spring for use with A-2 or similar length buttstocks.

Buttstock Buffer Spring CAR
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Lower receiver parts diagram
Lower receiver diagram IPBM 
CAR Buffer Spring assembly
Buffer Spring assembly for short buttstock or CAR Model type tubes.  This spring is also used in telescoping buttstocks.

Buffer Assembly (Standard Long)
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converted_bufferpad
Standard Length Buffer
Standard length buffer assembly for AR-15 or M-16 rifles.  This is the standard length buffer and can not be used in telescoping or short buttstocks.

Buffer Assembly (short)
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Buffer Assembly for CAR tubes or Telescoping buttstocks.
CAR buffer assembly for use in telescoping or short buttstocks.