Faxon Firearms FF556BCGCNITRIDETIN M16 5.56 Bolt Carrier Group .223 Rem/5.56 NATO TiN PVD Coated 9310 Steel For AR15/M16
Faxon Firearms FF556BCGCNITRIDELW Gunner Lightweight 5.56x45mm NATO, Salt Bath Nitride 9310 Steel For AR15 Rifle