Monmouth USA offers a wide selection of AR Parts and accessories manufactured by Aero Precision. From their AR Receivers, Bolt Carrier Groups, handguards, optic mounts, and all the other small parts required to build your custom AR Rifle, Aero Precision brings big value as the direct manufacturer. All Aero Precision parts are made in the U.S.A. When it comes to assembling your next AR15 or AR10, go to a name you can trust. Monmouth USA is proud to team up with Aero Precision to bring our customers the very best in AR Parts and accessories.