The Xtreme Tactical Sports MIL-SPEC Buffer Tube Assembly Kit features a MIL-SPEC buffer tube with a carbine buffer spring to help cycle the action. The assembly kit comes with a 3.5-ounce buffer, along with a castle/lock nut and end plate to keep everything secured in place. Xtreme Tactical Sports MIL-SPEC Buffer Tube Assembly Kit Black - Outdoor Supplies And Accessories at Academy Sports
