Wilson Combat Bolt Carrier Assembly 5.56 Nickel – Complete Drop-In BCG

The Wilson Combat Bolt Carrier Assembly in 5.56 is a complete, drop-in replacement bolt carrier group with a nickel boron finish for improved lubricity and corrosion resistance. Machined to Wilson Combat's specifications, this BCG delivers reliable cycling and extraction in AR-15 platform rifles chambered in 5.56 NATO or .223 Remington. The nickel boron coating reduces friction and makes cleanup faster than standard phosphate finishes.

This assembly includes a complete bolt carrier, bolt, cam pin, firing pin, and retaining pin—everything needed for installation. Compatible with mil-spec AR-15 upper receivers. The nickel finish provides a hard, low-friction surface that extends service intervals and resists carbon buildup during high-volume shooting.

• Type: Complete bolt carrier group
• Compatible Firearms: AR-15 platform rifles (5.56 NATO, .223 Remington)
• Finish: Nickel boron
• Includes: Bolt carrier, bolt, cam pin, firing pin, retaining pin
• Use: Direct replacement for mil-spec AR-15 BCGs