This guide breaks down the complex, mission-critical function of the AR-15 Bolt Carrier Group (BCG), explaining its eight distinct jobs during the firing cycle. Expert insights cover materials like Carpenter 158 steel, quality control tests such as MPI and HPT, and the importance of a properly staked gas key. It also explores various BCG enhancements and provides selection advice for different user needs.
This video offers a detailed product spotlight on Brownells AR-15 Bolt-Carrier Groups (BCGs). Paul Levy highlights various configurations and finishes, including Nitride, Parkerized with chrome-lined interiors, Titanium Nitride (TiN), Nickel-Boron, and Hard-Chromed. Special mention is made of the Slick-Side option for Retro Rifle builders and a Lightweight BCG. The description emphasizes the quality of materials (steel alloy), precision machining to military specifications, Magnetic Particle Inspection (MPI) of bolts, proper staking of gas keys, and the use of components from top-tier manufacturers. A Lifetime Guarantee is also a key feature discussed.
This video reviews the Insane Kydex Glock Barrel, a match-grade aftermarket barrel for Glock pistols. The review compares it to other popular barrel manufacturers like Blacklist Industries, KKM, S3F Solutions, and Agency Arms. The barrel is made from 416R Stainless Steel with a 1/10 twist pulled broach rifling and is available in threaded versions with TiN, TiAlN, or stainless steel finishes. It's offered for Glock 19, Glock 17, and Glock 43. The video highlights its performance and suitability as a Glock mod for concealed carry.
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