AR Barrels

Monmouth USA is teamed up with two very strong barrel manufacturers to offer you some of the very best AR barrels.   Both Ballistic Advantage and Faxon Barrels are manufactured in the U.S.A by hardworking men passionate about barrel-making.  We offer AR barrels to meet your every need; no matter if you are building a Designated Marksman Rifle (DMR) or a lightweight build to retain upmost agility, Monmouth USA has you covered.  We offer barrels in both Chrome Moly Vanadium or Stainless Steel, and in calibers ranging from the standard 5.56 NATO / .223 to 300 BLK, 308 Win, 6.5 Creedmoor and 9mm.   Both manufacturers have outstanding customer service and with all Ballistic Advantage barrels, you get a guaranteed 1 MOA accuracy guarantee.  If you need assistance in the selection of an AR barrel you can read this article or contact us, we’re here to help; email us at

Pick up an Aero Precision 5.56 Phosphate BCG today for just $103.95! Or AR15 Assembled Upper Receiver for just $69.95!