Faxon Firearms FF9MMBCGCNITRIDE PCC Blowback Gen2 9mm Luger, Salt Bath Nitride 8620 Steel For AR-15 Compatible w/Glock, Colt
Faxon Firearms FF556BCGCNITRIDETIN M16 5.56 Bolt Carrier Group .223 Rem/5.56 NATO TiN PVD Coated 9310 Steel For AR15/M16