Selling an extra AR15 barrel, unfired in mint condition. Was taken off an H&R m16a1. See description below. Email for questions, cash or electronic payment. From H&R website: Parkerized with Chrome bore. Rifle style barrel extension, and rifle position gas port. Muzzle is threaded 1/2x28. Perfect for a Retro or K.I.S.S build. 1/7 twist. With a .625" FSB journal. NOT COMPATIBLE WITH UPPERS THAT HAVE M4 FEED RAMPS