Wilson Combat TRBCAPNIB Nickel Boron Bolt Carrier Assembly

Description

Product Overview

Wilson Combat TRBCAPNIB is a complete AR-15 bolt carrier assembly built for long-term 5.56 NATO reliability. It uses a Carpenter No. 158 steel bolt that is MPI inspected and randomly batch HPT tested, paired with an 8620 steel carrier that is internally chrome-lined and parkerized for corrosion resistance. Tool steel extractor and ejector components help deliver consistent feeding and ejection across a wide range of 5.56 case head-based AR platforms.

Key Features

• Carpenter No. 158 steel bolt with MPI inspection and HPT testing for dependable pressure durability
• Nickel-Boron (NIB) coated components with internally chrome-lined carrier for smooth operation and corrosion resistance
• Tool steel extractor and ejector machined per mil-spec details
• GI-spec gas key machining and chrome-lined, phosphated, heat-treated configuration with properly staked fasteners
• Full-auto style carrier mass/profile for added rotational inertia and reliability benefits on carbine-length and short/suppressed systems
• Drop-in fit for 5.56 case head-based AR rifles including .223/5.56 NATO, .300 Blackout, .204 Ruger, and 7.62x40 WT

Upgrade or refresh an AR-15 with a Wilson Combat complete bolt carrier assembly designed for consistent function and extended service life.