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The Aero Precision .308 / 7.62 Bolt Carrier Group is the perfect firing mechanism for your big-bore rifle build. This high quality BCG features a mil-spec phosphate finish and now includes a laser engraved Aero Precision "A" logo!
Complete, mil-spec assembly with bolt, bolt carrier, and firing pin ready to drop into the rifle or carbine upper of your choice. Features a shot-peened bolt for increased surface strength and durability, and an extractor booster to ensure reliable cycling during rapid semi-auto or full-auto fire. Each assembly is magnetic particle inspection tested to ensure it’s free from imperfections that can lead to premature failures. Properly staked gas key prevents gas leakage that can lead to short stroking. M16-style carrier on the black phosphate model has full-length shroud for tripping auto sear, so this carrier may be installed on full-auto law enforcement and military rifles.
SPECS: Steel, black parkerized finish. Fits mil-spec semi-auto and full-auto AR-15/M16 upper receiver chambered for .223/5.56mm.
The Brownells M16 7.62x39 Bolt Carrier Group offers AR-15 builders building a unique rifle chambered in the 7.62x39 cartridge with the final necessary component needed to get their gun running right.
The Brownells M16 7.62x39 Bolt Carrier Group features a bolt head that is fully machined from solid 9310 steel, which is then completed with a heat treatment and shot peening. The carrier is built using 8620 hardened steel.
The Brownells M16 7.62x39 Bolt Carrier Group comes complete with a firing pin, cam pin and firing pin retaining pin, along with the bolt carrier, bolt and gas key.
Each WMD bolt-and-carrier set is precisely machined from high-grade steel alloy to government M16 specs, then given WMD's proprietary NiB-X nickel boron coating that results in a super-smooth, harder-than-chrome surface. NiB-X reduces friction to the bare minimum and is impervious to corrosion and abrasion. The slick finish also keeps carbon from adhering, so clean up is much faster and easier than with standard parts. Ideal choice for 3-gun competitor sand other high-volume shooters. Available with a matching NiB-X coated hammer for the smoothest cycling. Also available as an M16 Bolt Carrier Group.
SPECS: Carrier – 8620 carbon steel. Bolt – Carpenter 158 steel alloy. Both have Nickel boron finish, silver. Extractor includes black buffer, black O-ring, and spring. Fits mil-spec AR-15/M16 upper receiver.M16 carrier available.
The Brownells 9mm AR-15 Bolt Carrier Group is specifically designed for use in pistol-caliber carbines, which are a growing trend in the AR-15 world. This bolt-carrier group allows AR builders to custom-make their own 9mm AR.
The Brownells 9mm AR-15 Bolt Carrier Group is constructed entirely from a single piece of steel billet and features a pinned weight that can be taken out for compatibility with different buffer systems.
The Brownells 9mm AR-15 Bolt Carrier Group also features a captured firing pin in order to prevent the possibility of slam fires.
The entire Faxon Firearms 9mm AR-15 Full-Mass Bolt / Carrier Group is machined from a single billet of mil-spec 8620 carbon steel. Even the integral gas "key" is machined as part of the carrier - no fasteners to worry about working loose. Faxon also designed the 9mm AR-15 Full-Mass Bolt / Carrier Group to be compatible with lower receivers that use Colt-style stick mags and those configured for Glock® pistol mags. It also has the correct shroud length to trip the auto sear on full-auto rifles; has no impact on function of semi-autos.
To avoid slam-fires, the 9mm AR-15 Full-Mass Bolt / Carrier Group’s firing pin is captured with a dedicated pin and spring. Extractor is easily serviced and contoured for consistent purchase on the case rim for reliable extraction.
The Foxtrot Mike Products FM-9 Bolt / Carrier Group fits 9MM AR style pistols and carbines that use lowers designed for Glock style magazines only. Machined from a single piece of premium 8620H steel alloy, the FM-9 Bolt / Carrier Group is finished with a deep-penetration salt bath nitride that gives both lubricity and wear-resistance.
As an added benefit, the FM-9 Bolt Carrier is “ramped” to accommodate both standard GI and dedicated 9mm hammers.
The Foxtrot Mike Products FM-9 Bolt Carrier Group comes complete, with firing pin and extractor installed, and ready to go into your pistol caliber carbine build.
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