Brownells 75th Anniversary - A Shooting Heritage

The KE Arms AR-15 GI Parts Kit has every part you need to assemble your bare lower receiver into a functional piece for your custom AR-15 or M4 build. All parts Made in USA! Now available with the Brownells AR-15 Collapsible Stock Assembly.

The AR-15 collapsible buttstock similar to the current US GI M4 carbine stock provides convenient six-position length-of-pull adjustment to fit different-size shooters, including those wearing body armor. Ready to install on any standard AR-15 rifle or carbine lower receiver; includes buffer tube, receiver lock plate, lock nut, toe-mounted steel sling loop, carbine recoil spring and buffer. Buttstock is made from extremely tough, fiberglass-reinforced, injection-molded nylon to resist impact, heat, moisture, extreme cold, and most cleaning solvents. Steel lock nut has four square notches and pre-cut detents for staking to lock plate. Available with Mil-Spec (nominal 1.14"" O.D.) receiver extension tube. Stock interior diameter is matched to buffer tube O.D. for a snug fit that eliminates unwanted play and rattles.

Trigger Guard and Pistol Grip

  • Trigger guard assembly-Enhanced Polymer Winter Trigger Guard, secures with roll pin and set screw for easy installation (allen wrench not included)
  • Trigger guard roll pin
  • A2 Pistol grip-Injection Molded Glass Filled Nylon
  • Pistol grip screw
  • Grip screw lock washer-Stainless Steel

Fire Control Group

  • Hammer- Investment Cast and Precision Machined Steel, Magnesium Phosphate Coating
  • Hammer Spring- Black Oxide Coated
  • Trigger- Investment Cast and Precision Machined Steel, Magnesium Phosphate Coating
  • Trigger Spring- Black Oxide Coated
  • Disconnector- Fine Blank and Precision Machined Black Oxide
  • Disconnector Spring-Black Oxide Coated
  • Safety selector- Investment Cast and Precision Machined Steel, Magnesium Phosphate Coating
  • Selector detent spring-Black Oxide Coated
  • Safety selector detent-Melonite Coated Steel

Magazine Catch Assembly

  • Magazine release button-Anodized Aluminum
  • Magazine catch-Melonite Coated Steel
  • Magazine catch spring-Black Oxide Coated

Buffer Retainer Assembly

  • Buffer retainer-Melonite Coated Steel
  • Buffer retainer spring-Black Oxide Coated

Bolt Catch Assembly

  • Bolt catch- Investment Cast, Magnesium Phosphate Coating
  • Bolt catch plunger-Melonite Coated Steel
  • Bolt catch spring-Black Oxide Coated
  • Bolt catch roll pin

Take Down/Pivot Pin Assemblies

  • Takedown pin detent springs (2)-Black Oxide Coated, longer than standard trim to length needed for your lower
  • Takedown pin detents (2)-Melonite Coated Steel
  • Takedown pin-Melonite Coated Steel
  • Pivot pin-Melonite Coated Steel


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