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The Brownells Complete .308 Bolt Carrier Group is designed to operate reliably in DPMS LR-308 pattern rifles chambered in .308, .243, 7mm-08, .338 Federal, .260 Remington, 6.5mm Creedmoor, or any other cartridge based on the .308 Winchester. These BCGs are manufactured to the same uncompromising standards as our M16-style BCGs.
Our Complete .308 Bolt Carrier Group has a bolt machined from robust 9310 steel, heat-treated and shot-peened for superb hardness. The carrier itself is fabricated from hardened 8620 steel. Both are magnetic particle inspected (MPI) to make sure there are no hidden microscopic flaws that could lead to premature failure.
You can get the Brownells Complete .308 Bolt Carrier Group with a hard Black Nitride finish that is exceptionally resistant to surface wear OR a Nickel Boron coating (a dull matte silver) that’s even harder and self-lubricating to boot. Both come complete with firing pin, firing pin retaining pin, cam pin, gas rings, gas key, extractor, and ejector installed.
Brownells GunTech™ Note: Unlike BCGs with a traditional Parkerized finish, the carrier on our Black Nitride bolt carrier group is not hard-chromed inside because Nitride is actually harder than industrial chrome plating.
The Brownells M16 5.56 Complete Bolt Carrier Group is designed to work easily and reliably in any AR-15 or M16 rifle chambered in 5.56x45mm, 300 AAC Blackout or .223 Remington.
The Brownells M16 5.56 Complete Bolt Carrier Group is constructed with a bolt made from 9310 steel, which is finished with a heat treatment and shot peening. The carrier is fabricated from 8620 hardened steel. Each element of the bolt-carrier group is finished in a black-nitride coating.
The Brownells M16 5.56 Complete Bolt Carrier Group comes with a bolt, bolt carrier, gas key, firing pin, cam pin and a firing pin retaining pin.
Drop-in .22 LR conversion system comes fully assembled and ready to install in any semi-auto AR-15 to help you practice critical shooting skills with economical rimfire ammunition. Helps you concentrate on improving grip, sight alignment, trigger pull, and other skills without burning up expensive centerfire ammo.
Simply replace the rifle’s bolt and carrier with the Bravo .22 LR conversion unit, load up the included magazine with round-nose .22 LR ammo, and you're ready to shoot.
Precision machined from high-grade stainless steel for reliable function in any mil-spec AR-15 rifle or carbine chambered in 5.56mm NATO, including most gas piston systems.
Note: CMMG recommends Federal 36 grain plated round-nose ammunition for best performance. Works best with round-style AR-15 hammers; notched hammers can cause function problems.
Note: For Direct Gas Impingement AR-15's. Not compatible with Gas Piston Systems without removing the piston. Only for use in 5.56 NATO chambered AR-15 rifles.
SPECS: Stainless steel bolt group, brass extension bushing.
Get your .458 SOCOM or 450 Bushmaster AR-15 running perfectly with the Brownells M16 .458 SOCOM/450 Bushmaster Bolt Carrier Group, which features construction and finishing designed to provide the best possible performance in your rifle.
The Brownells M16 .458 SOCOM/450 Bushmaster Bolt Carrier Group features a bolt head built using 9310 steel, which undergoes heat treatment and shot peening for a durable finish. The carrier itself is made using 8620 steel that undergoes hardening after machining.
The Brownells M16 .458 SOCOM/450 Bushmaster Bolt Carrier Group provides users with a complete assembly, also including a firing pin, cam pin and a firing pin retaining pin.
The Brownells M16 5.56 Complete Bolt Carrier Group is an affordable option that is built and tested to provide flawless operation in any AR-15 or M16.
The Brownells M16 5.56 Complete Bolt Carrier Group features a bolt fabricated from 9310 steel that includes a heat-treated and shot-peened finish. The bolt carrier itself is built using 8620 steel, which features a hardened finish. The whole BCG is completed with a nickel-boron coating.
The Brownells M16 5.56 Complete Bolt Carrier Group features a full assembly that includes the bolt, bolt carrier, gas key, firing pin, cam pin and a firing pin retaining pin.
Classic Retro Chrome M16 Bolt Carrier Groups match the finish of the bolt found on the earliest AR-15 & M16 rifles introduced.
The Brownells M16 Chrome 5.56 Complete Bolt Carrier Group included a bolt machined from 9310 steel, which is magnetic particle inspected & finished with a slick chrome finish. The carrier is fabricated from 8620 hardened steel and also receives the same, durable chrome application. In addition to the bolt and carrier, the extractor, gas key and cam pin also are chromed to ensure all moving parts are corrosion resistant and as slick as possible. The Brownells M16 5.56 Chrome Complete Bolt Carrier Group is designed to work easily and reliably in any AR-15 or M16 rifle chambered in 5.56x45mm, 300 AAC Blackout or .223 Remington.
The perfect complement to a retro build, these BCGs are available with or without forward assist serrations. The model without serrations is similar to the original BCG found on early AR-15s, such as the Air Force 601. The model with serrations could be found on early XM16E1 models in the mid-1960s.
The Brownells M16 Chrome 5.56 Complete Bolt Carrier Group comes with a bolt, bolt carrier, gas key, firing pin, cam pin and a firing pin retaining pin.
Adding aftermarket components to an AR-15 doesn't have to be about practicality and utilitarianism. Sometimes, the look of a finished rifle plays into the selection of components. Get an eye-catching design in your rifle with the addition of the Brownells TiN M16 Bolt Carrier Group.
The Brownells TiN M16 Bolt Carrier Group provides AR owners with both rugged durability and an incredibly stunning look, thanks to the bright gold titanium-nitride finish used on the surface of the carrier and bolt. The carrier is made using 8620 tool steel, while the bolt head is machined from durable 9310 tool steel. The bolt is magnetic-particle inspected to ensure that consumers get the best-possible components, and the carrier itself is heat-treated for added durability.
The Brownells TiN M16 Bolt Carrier Group arrives ready to install, completed with torqued and staked gas key and an O-ring already present on the extractor.
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