UTG Leapers Pro TLU001-KIT Mil-Spec Receiver Extension Tube Kit AR-15 6061-T6 Aluminum
Leapers Mil-Spec Receiver Extension Tube Kit is made from 6061-T6 aluminum with rolled threads and a matte black hard coat anodize finish. Included is a 6 position extension tube, carbine buffer, buffer spring, receiver end plate, and a castle nut. This kit is made in the US.