AR-15 Parts and Accessories Built in Warminster, PA
360 Precision AR-15 accessories and parts are designed, machined, and assembled in Warminster, PA for shooters who want hard-use reliability, precise fitment, and premium materials from a U.S. manufacturer. Explore our lineup of AR-15 complete uppers, upper receivers, lower receivers, billet receiver sets, AR-15 and M5 builder sets, and handguards—built to work with mil-spec AR-15 / M4 components and support everything from compact 12.5-inch setups to full-length configurations. If you’re searching for a 12.5 inch AR-15 complete upper, a 7075 billet upper and lower receiver set, a 15 inch M-LOK handguard with barrel nut, or American-made AR-15 parts and accessories, you’re in the right place. Browse the categories below to compare options, finishes, and compatibility, or contact 360 Precision for product questions and availability.






