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Brownells – AR-15/M16 Mil-Spec Buffer Tube Assembly


Out Of Stock

Out of stock


  • Six position AR-15/M16/M4 receiver extension assembly
  • Includes Mil-Spec receiver extension/buffer tube, receiver lock plate, lock-nut/castle nut, carbine buffer and carbine buffer spring
  • Buffer tube is Mil-Spec diameter and 6061 aluminum
  • Carbine buffer weight is 3 oz
  • Buffer spring is 17-7 stainless steel