Selector Spring Detent (Selector) Trigger Pin Hammer Pin Large hole hammer/trigger pin Rear takedown Pin Buttstock Aluminum Spacer. Selector Selector, 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, Pistol Grip Screw, Pistol Grip Lock Washer A-2 Pistol Grip, Black Plastic AT3 strives to make the process as simple as possible to help you shop for the lower you want, with prompt shipment to your FFL of choice. It’s the one part of the AR-15 that is serialized and considered a firearm, and its sale is regulated by the ATF. Having M-16 parts in your AR-15 type rifle can be construed as intent. If you have any questions contact BATF at 1-800-ATF-GUNS.ĪR-15 lower receiver parts are as follows:īuttstock Buffer Spring (Std) Buttstock Buffer Spring (Car) Buffer Assembly (Std) Buffer Assembly (Car) The AR-15 lower receiver is a key portion of your build. We do not sell any conversion parts, only replacement parts for registered machine guns. Please note: AR-15 lower receiver 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 and should be used for replacement parts only. These receivers were found on the first M16 rifles issued to the troops in Vietnam, before the arrival of. The original XM16E1 lower receiver was developed for the 'improved' M16 rifles produced by Colt Manufacturing for the U.S. Models also available for sale in STEP/IGS file format as well as original SolidWorks Source Files. Current-production AR-15 components will work perfectly with this XM16E1 lower receiver. Models are tested and proven, ready for CNC. We do not sell any conversion parts, only replacement parts for registered machine guns. Dimensional correct, taken from Colt AR15 Lower Receiver. 5.56mm NATO (.223 Rem.) Colt Pre-Ban AR-15 Lower Receiver R6601 Absolutely Excellent Condition AR15 20 inch ' barrel PRICE: 1,500. M-16 parts are available and should be used for replacement parts only. It features durable proprietary polymer construction, molded in black finish, integrated trigger guard, and. A list of the internal parts for the AR-15 lower receiver. Please note: AR-15 lower receiver 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. The FMK Firearms AR1 is an ultralight polymer lower receiver for AR-15 style firearms.