Surplus AR-15 Mil-Spec Bare Bones Lower Build Kit

Discount Mil-Spec Carbine Buffer / Receiver Extension Kit

The AR Receiver Extension Kit is constructed from aircraft grade aluminum with rolled threading. The buffer tube has been hard coat anodized for maximum corrosion and wear resistance. A standard buffer spring and 3oz carbine buffer are included as well as a castle nut and lower receiver end plate.

This assembly kit will fit on all Mil-Spec AR-15 lower receivers.

• Mil-Spec Carbine Buffer Tube / Receiver Extension
  • 6 Position Aircraft Grade Aluminum
• Carbine Buffer Spring
• Castle Nut/Receiver Nut
• Mil-Spec Receiver End Plate
• Carbine Recoil Buffer
• Anti-rotation buffer retaining tabs may vary (depending on batch)

Surplus AR-15 Mil-Spec Lower Parts Kit

This complete lower parts kit is a mil-spec or better LPK with well-machined components.

Technical Specs

• 31 piece set to complete a lower.
• Machined parts, no MIM.
• Hammer 8620 Steel
• Trigger 8620 Steel
• Disconnector 4340 Steel
• Trigger Pin 4140 Steel
• Bolt Catch 4340 Steel
• Polymer Pistol Grip