Wilson Combat M16 Bolt Carrier Assy 5.56 Nato Phosphate Black

The Wilson Combat M16 Bolt Carrier Assembly in 5.56 NATO is a precision-engineered drop-in replacement built on the same exacting standards Wilson Combat uses in their custom rifles. This is the kind of component serious AR shooters keep on the bench—a complete, ready-to-run bolt carrier group that handles everything from standard 5.56 to .300 Blackout, .204 Ruger, and 7.62×40 WT. If you run a quality 5.56 case head AR, this full-auto carrier will bolt in and function reliably whether your rifle wears a 16-inch barrel, a short setup with a suppressor, or something in between.

Built from Carpenter No. 158 steel and shot peened for strength, the bolt itself is complemented by a tool steel extractor and ejector assembled to Mil-Spec tolerances. The 8620 steel carrier features a properly machined Mil-Spec gas key, chrome lined and heat treated per GI specifications, then secured with Grade 8 fasteners and staked in-house during final inspection. Every assembly is Magnetic Particle Inspected; samples are randomly subjected to High Pressure Testing. The phosphate black finish and internal chrome lining work together to resist corrosion and extend service life through hard use and regular cleaning.

This is the kind of spare parts upgrade that separates prepared shooters from the rest. Whether you're building a new upper, running a dedicated training rifle, or simply want a known-good backup for your primary gun, a complete bolt carrier assembly eliminates guesswork and keeps you in the fight.

Key Features

• Carpenter No. 158 steel bolt, shot peened for increased strength
• Tool steel extractor and ejector per Mil-Spec
• 8620 steel carrier with Mil-Spec machined gas key
• Chrome lined internally and phosphate finished externally
• Grade 8 fasteners, staked and secured in-house
• Magnetic Particle Inspected; random HPT testing
• Full-auto carrier profile compatible with 5.56, .300 Blackout, .204 Ruger, 7.62×40 WT
• Drop-in fit for any quality 5.56 case head AR rifle

Specifications

Frequently Asked Questions

What calibers will this bolt carrier work in?

This assembly is compatible with any rifle chambered in 5.56 NATO, .300 Blackout, .204 Ruger, or 7.62×40 WT, provided the rifle uses a standard 5.56 case head and is a quality-built AR platform.

What's the difference between this full-auto carrier and a semi-auto carrier?

The full-auto carrier is heavier, which increases mass and lowers cyclic rate. This benefit is most pronounced in carbine-length and shorter gas systems, short-barreled rifles, and suppressed builds. The semi-auto carrier is slightly lighter, reducing recoil impulse in rifle-length systems and making firing pin reinstallation easier after cleaning. Both types are completely interchangeable and legal to own in a semi-automatic rifle.

Is this a drop-in component?

Yes. This Wilson Combat bolt carrier assembly is designed to drop into any quality 5.56 case head AR rifle without modification or special fitting.

What quality assurances come with this bolt carrier?

Every assembly is Magnetic Particle Inspected for internal defects. Samples are randomly subjected to High Pressure Testing. All components are machined to Mil-Spec and assembled in-house with Grade 8 fasteners, staked and verified during final inspection.