AR 15

Get what you need to complete your build with upper receiver parts from Primary Arms. We carry the best AR 15 parts, upper parts kits, and complete upper assemblies from brands like Aero Precision, Anderson Manufacturing, Armalite, Bravo Company, Bear Creek Armament, CMMG, Daniel Defense, Faxon Firearms, JP Enterprises, Magpul, Odin Works, Radical Firearms, Seekins Precision, Spike’s Tactical, Strike Industries, Yankee Hill Machine, Zev Technologies and many more. Choose from many options for products like flip-up sights, muzzle brakes, compensators, flash hiders, charging handles, forward assists or gas system parts.