AR Takedown Pin swap without disassembly

This guide provides a detailed, step-by-step process for installing a TriggerTech trigger on a Remington 700 action, presented by an expert from Brownells. It covers trigger removal, installation of both single and two-stage models, and crucial post-installation safety checks. The video also touches on adjusting pull weight and the differences between TriggerTech's Primary, Special, and Diamond trigger grades.

This guide, presented by School of the American Rifle, details how to identify and replace a malformed weld spring in an AR-15 Delta Ring assembly. A misaligned weld spring can cause the gas tube to be pushed off-center, leading to excessive friction or damage to the carrier key and gas tube. Replacing the faulty component ensures proper gas tube alignment and firearm reliability.

This guide details the process of diagnosing and fixing a significant rail wobble issue on a new Daniel Defense Mk18 upper receiver. The primary cause identified was a hand-tight barrel nut, compromising the stability of the RIS II rail system. The steps involve disassembly, inspection of the barrel nut, proper tightening with an armorer's wrench and torque wrench, and reassembly. This addresses a critical quality control failure that can affect firearm accuracy and reliability.

This YouTube video offers practical tips and techniques for polishing stainless steel firearm components. The content focuses on achieving a high-quality finish on gun parts, likely aimed at gunsmiths, hobbyists, and firearm enthusiasts looking to customize or maintain their weapons. The video emphasizes real-world application and likely demonstrates various methods and tools used in the polishing process for stainless steel firearms.

This video provides a clear, step-by-step tutorial on installing an AK FRT-style trigger. It covers complete disassembly, installation, reassembly, and function checks, emphasizing safe handling and legal compliance. The tutorial aims to be approachable for authorized AK owners and is intended for informational and educational purposes only, explicitly stating no rate-of-fire enhancing techniques or unsafe practices are demonstrated. The video also mentions compatibility with multiple AK platform variants and encourages viewers to subscribe for more content.

This guide details the evolution of AR-15 carrier key staking from early 'Gen 1' square staking to modern 'Gen 5' OCKS with serrated heads. It emphasizes proper torque values (vintage 35-40 in-lbs, modern 55-58 in-lbs) and the importance of sufficient metal displacement for screw security. The video, presented by an expert from School of the American Rifle, critiques commercial staking and references historical technical manuals.

This video details the diagnosis and repair of a feeding issue on a Sons of Liberty Gun Works East India upper receiver. The root cause was identified as a sharp burr on the barrel extension's feed ramp, causing rounds to jam. The solution involved polishing the feed ramps and adding a secondary bevel, replicating Colt's design, which successfully resolved the malfunction.

This video demonstrates the internal mechanics of an AR-15 bolt carrier group using cutaway models. It highlights the importance of internal bore dimensions for gas system efficiency and explains how to diagnose potential issues like gas leaks. The demonstration covers the cycle of operation, critical seals, and common manufacturing defects, offering advanced insights for AR-15 maintenance and troubleshooting.

This video provides a detailed autopsy of a faulty AR-15 Bolt Carrier Group (BCG). The analysis reveals critical manufacturing defects including an undersized bolt tail failing gauges, excessive firing pin protrusion causing pierced primers, an oversized firing pin hole, and an oversized cam pin hole leading to headspace issues. These flaws significantly compromise the BCG's function and reliability.

This video details the autopsy and repair of a Black Rain Ordnance SPEC15 AR-15, focusing on addressing an over-gassed system. Key upgrades include a BRT EZTUNE gas tube, Sprinco buffer spring and extractor/ejector springs, and a JP titanium firing pin. The process involves meticulous reassembly with specific torque values and the use of Loctite 620 for barrel bedding, resulting in a properly tuned gas system.