Purchase the Cobra AR-15 Lower Build Kit here!

OEM Lower Parts Kit
Mil-Spec Quality Complete Lower Parts Kit includes, Bolt Catch, Bolt Catch Plunger, Bolt Catch Roll Pin, Bolt Catch Spring, Buffer, Retainer, Buffer Retainer Spring, Disconnect, Disconnect Spring, Traditional Hammer (Black or Silver in Color), Hammer Pin, Hammer Spring, Magazine Catch, Magazine Catch Button, Magazine Catch Spring, Pistol Grip (A2 style), Pistol Grip Lock Washer, Pistol Grip Screw, Pivot Pin, Pivot Pin Detent, Pivot Pin Detent Spring, Selector, Selector Detent, Selector Detent Spring, Takedown Pin, Takedown Pin Detent, Takedown Pin, Detent Spring, Traditional Trigger (Black or Silver in Color), Trigger Guard, Trigger Guard Roll Pin, Trigger Pin, Trigger Spring.

Trinity Force Cobra Stock

  • Mil Spec Design & Tolerances
  • Quick Disconnect Swivel Mount
  • Durable Polymer Stock
  • Lifetime Manufactures Warranty

Discount Buffer / Receiver Extension Kit

  • Mil-Spec Carbine Buffer Tube / Receiver Extension
  • 3oz Carbine Buffer
  • Carbine Buffer Spring
  • Castle Nut/Receiver Nut
  • Mil-Spec Receiver End Plate
Take a look at our other AR-15 Lower Build Kits here!

Advertised Price is good until 12/12/2019