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)