Videos tagged with BCG Gauging

This video provides a detailed physical inspection and gauging of a Centurion Arms bolt carrier group (BCG). It covers checking for machining marks, staking quality, and uses pin gauges to measure critical dimensions like the carrier's 3-bore, bolt tail seal, and bolt shoulder support. The instructor also demonstrates how to perform a reverse torque test on the gas key and checks for proper firing pin protrusion and headspace. While some areas showed minor roughness, the overall assessment indicates a functional and well-manufactured BCG.

This video provides a detailed physical inspection of a Knight's Armament Sandcutter Bolt Carrier Group (BCG). It covers essential checks like bolt protrusion, extractor function, headspace, and gas ring integrity using various gauges. The instructor also performs a reverse torque test on the carrier key screws and identifies minor gas leakage, leading to a recommendation for carrier key replacement and proper staking.