Leapers, Inc. - UTG UTG PRO AR Pistol Receiver Extension Tube, Matte Black, TLU008 Leapers UTG PRO gears is designed and made right here is the USA. This particular item is a popular AR-15 Pistol Receiver Extension Buffer Tube featuring a 1.2" Outside Diameter. The Tube is precision machined from 7075-T6 Aircraft Grade Aluminum and features a Type III Class II Hard Coat Anodized Finish. The Interior of the tube features a dry film lube coating which promotes smoother and more reliable cycling. The pistol buffer tube will accept standard AR15 carbine type buffers and springs which are sold separately. The tube itself features a matte black finish.