Out of stock
SKU: WW6228
UPC: 639266300052
MPN: 6228
The FOSTECH COMPLETE BOLT CARRIER GROUP with nickel boron coating is a precision-engineered AR-15 component built for operators and shooters who demand reliability under sustained use. This complete BCG assembly serves as the heart of any modern rifle platform, converting chemical energy into cyclic operation while maintaining exacting tolerances critical for accuracy and reliability. Whether you're outfitting a duty rifle, competition build, or duty-grade carbine, a high-quality bolt carrier group is non-negotiable—it directly impacts function, longevity, and performance downrange.
The nickel boron coating applied to this Fostech BCG delivers measurable advantages over standard parkerized or phosphate finishes. Nickel boron reduces friction and wear on both the carrier and bolt surfaces, extending component life and improving bolt carrier travel smoothness—critical in suppressed fire where back-pressure demands are elevated. The coating resists corrosion and environmental degradation far more effectively than traditional finishes, making this BCG suitable for storage in field conditions or exposure to moisture and salt. Fostech's tight manufacturing tolerances ensure proper headspace and carrier tilt geometry, essential for safe primer ignition and consistent chambering across multiple ammunition types.
Law enforcement armories and military units standardize on complete BCG assemblies like this to reduce inventory complexity and ensure compatibility across rifle platforms. The complete carrier group design (bolt, key, and carrier as a matched set) eliminates the risk of component mismatch that can occur with separately sourced parts. Installation is straightforward: the BCG drops into any standard AR-15 receiver without modification. This Fostech assembly performs reliably in 5.56 NATO and .223 Remington platforms and maintains consistent cycling whether you're running suppressed or unsuppressed systems, making it ideal for both tactical and precision applications.
WARNING ⚠️ You must be 18 or older to purchase shotgun or rifle ammunition and 21 or older to purchase handgun ammunition and firearms. Please reference our requirements for ammunition orders to "restricted" states HERE. Always make sure you use the correct ammunition for your firearms. Ammo cannot be shipped to a PO Box. Please reference state & local laws before making a firearm or ammunition purchase.
