Is your bolt the real enemy?

This expert guide from the School of the American Rifle details how to identify and address rough carrier key bores in AR-15 bolt carrier groups. The instructor, demonstrating expert knowledge, explains how these manufacturing defects, particularly on Colt components, can lead to premature wear on the gas tube and reduced reliability. Solutions involve replacing the defective carrier key to ensure smooth operation and longevity of the firearm.

This guide details the process of lapping an AR-15 receiver to ensure proper barrel alignment for improved long-range accuracy. Instructor Stephen Caleb from Brownells explains that receiver faces can be slightly out of alignment, leading to barrel runout. The process involves using a specialized lapping fixture and aluminum oxide lapping compound with a drill to create a perfectly flat receiver face. This ensures the barrel seats flush and square, critical for precision shooting beyond 500 yards.

This guide details the installation of an aftermarket AR-15 trigger, specifically a Timney Triggers product, into a clear lower receiver. The process involves unboxing, component inspection, mounting the trigger assembly with pins, and performing a function check. The demonstrative tone and clear handling of components suggest an experienced instructor guiding the viewer through a common firearm modification.

This guide details how to adjust an AR-15's adjustable trigger, focusing on reducing pre-travel and overtravel for a crisper break. It emphasizes safety checks and the use of a trigger pull gauge. The video, presented by an expert from AT3 Tactical, explains that adjustable triggers offer customization for accuracy and performance, particularly for competition shooters and range enthusiasts, but may not be ideal for home defense or casual use due to potential safety concerns if set too light.

This expert-level guide details the reassembly of the Ruger Harrier Rifle, presented by a Ruger firearms instructor. It covers the step-by-step process of assembling the bolt carrier group, installing it with the charging handle into the upper receiver, and joining the upper and lower receivers. Crucially, it emphasizes thorough function checks to ensure proper operation and safety after reassembly.

This guide details troubleshooting and maintenance for the Beretta 92XI with a .22LR conversion kit, based on insights from PoorBoy Arms. It covers proper cleaning, lubrication, and part polishing to address potential malfunctions and prevent damage, particularly concerning the slide not locking open. The process emphasizes safety and methodical steps for improved firearm reliability.

This guide details the field stripping and reassembly process for the Walther PPK/S, as demonstrated by a knowledgeable firearms instructor. It covers the unique trigger guard release mechanism for slide removal and emphasizes the importance of safety during the procedure. The review highlights the hybrid American/German manufacturing and its implications for import regulations.

This guide details troubleshooting steps for an AR-15 build experiencing cycling failures, as demonstrated by Graham Baates. It covers inspecting the bolt carrier group, buffer tube, adjustable gas block, and trigger assembly for potential issues. The process emphasizes careful disassembly and reassembly to diagnose and resolve short-stroking or failure-to-cycle problems.

This guide details the field stripping process for the Bersa TPR9C, as demonstrated by GBGuns. It covers the essential steps for safely disassembling the firearm for cleaning and inspection, emphasizing critical safety checks. The speaker's high authority level ensures a technically sound procedure.

This review details the Smith & Wesson Performance Center Pro Series Compact 1911 in 9mm, highlighting its external features, internal components, and field stripping process. The expert analysis covers the scandium alloy frame, 3-inch bull barrel, and trigger characteristics, offering insights into its suitability for concealed carry and potential limitations with certain ammunition types.