This video provides an in-depth autopsy and inspection of a Fail Zero AR-15 Bolt Carrier Group (BCG) that was causing cycling issues. The instructor meticulously tests various components, including gas rings, firing pin protrusion, extractor, and carrier key integrity. The primary cause of failure was identified as a loose carrier key with poorly torqued screws and debris preventing a proper seal, rather than internal dimensions.
This video reviews the Fail Zero Lightweight Bolt Carrier Group, highlighting its nickel boron coating for ease of cleaning and slickness. The BCG is noted as 41% lighter than an M16 style, contributing to a noticeable reduction in felt recoil during shooting. The presenter also touches on the proprietary UCT coating formula with high boron content, claiming superior durability and wear resistance compared to competitors.
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