Toolcraft .223/5.56/300 BLK M16 C158 Profile Bolt Carrier Group - P51 (Polished DLC)

This Toolcraft P51+ Polished DLC BCG is made with a carpenter 158 bolt with a full-auto profile, designed to be used in AR-15 & M-16 style rifles. Bolt is magnetic particle inspected (MPI) for a uniform quality and operational reliability.Time for the good stuff. When we talk about benefits, P51+ leads that pack. These bar-setting benefits are what make P51+ the crowd favorite when it comes to DLC coatings.Increased HardnessSuper-low FrictionChemically InertCorrosion ResistantBolt Material: C158 O-Ring: Mil-Spec Gas Rings: Mil-Spec (3) Cam Pin Material: 8620 Steel Firing Pin Material: 416 Stainless Steel Other: MPI InspectedProfile: Full Auto ProfileGas Key: Grade 8 Hardened Fasteners, Staked per MilSpecManufacturer: ToolcraftCaliber: 5.56/.223