AR-15riflelowerreceiverparts
Lower parts kit for the ar-15 rifle
Lower Receivers
A introduction to the lower receiver used in the AR-15 and M-16 Rifle

A list of the internal parts for the lower receiver.  Please note: AR-15 parts and M-16 parts are different,

and,  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 BATF at 1-800-ATF-GUNS.

AR-15 M-16 parts are as follows:

Buttstock Buffer Spring (Std)
Buttstock Buffer Spring (Car)
Buffer Assembly (Std)
Buffer Assembly (Car)
Selector
Selector, M-16
Bolt Catch Spring
Bolt Catch Detent
Bolt Catch
Bolt Catch Roll Pin
Magazine Catch
Magazine Catch Assembly
Detent Spring
Takedown Detent
Magazine Catch Spring
Magazine Catch Button Aluminum
Magazine Catch Button Al Radiused
Front Pivot Pin
Disconnector
Colt Large hole Disconnector
Disconnector, M-16
Pistol Grip Screw
Pistol Grip Lock Washer
A-2 Pistol Grip, Black Plastic
Selector Spring
Detent (Selector)
Trigger Pin
Hammer Pin
Large hole hammer/trigger pin
Rear Takedown Pin
Buttstock Aluminum Spacer