The FM Products AR-15 9mm Build Kits give you a jump start on joining the trend of fun to build, fun to shoot PCCs. FM Products has built up a solid reputation as a quality supplier of pistol caliber AR-15 components and these Build Kits take many of those key components and bundle them together to save you time and money. Included in the 9mm Build kit is a stripped, Glock magazine compatible lower receiver, a complete 9mm bolt, a heavy buffer, a .308 buffer spring, a thread protector, and your choice of 5", 7", or 9.75" 9mm barrel. The FM-9 9mm Stripped Lower Receiver is compatible with all 9mm Glock-style magazines and featuring last-round bolt hold-open, ma Mfg: Foxtrot Mike Products