This video provides an in-depth physical inspection and testing of five Knight's Armament Company (KAC) bolt carrier groups (BCGs) and one Lewis Machine & Tool (LMT) Enhanced Bolt. The instructor meticulously gauges various dimensions, checks for wear, and assesses the internal finishes of the carriers. The process includes replacing carrier keys and screws, performing torque tests, and highlighting the unique features of the LMT Enhanced Bolt, offering valuable insights for AR-15 owners and gunsmiths.
This video provides an in-depth review of the Sharps Rifle Co. (SRC) XPB Extreme Performance Bolt Carrier Group. Sootch00, a respected firearms reviewer, details the BCG's construction from S7 tool steel, its Diamond-Like Carbon (DLC) coating for enhanced lubricity and ease of cleaning, and unique design features like relief cuts and tapered bolt lugs. The review covers material advantages over standard Mil-Spec BCGs, quality control measures (HPT/MPI), and performance during live-fire testing, highlighting reduced felt recoil and smoother operation.
This video provides an in-depth look at the Swiss Schmidt-Rubin 1889 rifle, dispelling myths about its ammunition. It details the rifle's unique straight-pull bolt action, its 12-round magazine, and its long barrel with a significant throat. The discussion focuses on the original GP 90 cartridge with its paper-patched, soft-lead bullet, and contrasts it with later ammunition types, offering guidance for handloaders dealing with the rifle's specific chamber and barrel dimensions.
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