Kin to the Armalite Rifle - The Johnson 1941 Bolt

This live Q&A session from Small Arms Solutions covers a wide range of firearms-related topics. The instructor, demonstrating significant expertise, addresses issues with Sig AR pistols, discusses the Chris Vector's ergonomics, and analyzes the potential for 5.56mm round development. He also provides insights into the 300 Blackout cartridge, the PSA KS47's performance, and the Benelli M4 shotgun's combat-proven status. The discussion extends to ammunition quality, manufacturing challenges for retro AR parts, and the debate between nitriding and chrome lining for barrels.

This video provides a comprehensive historical overview of the AR-15 platform, tracing its development from the AR-10 through various M16 and M4 iterations up to modern military adoption and potential future replacements. It details key design changes, military trials, and the evolution of the platform's role and features. The narrative highlights the contributions of Eugene Stoner and the influence of military requirements on the rifle's design.

This video provides a comprehensive history of the M16 rifle's evolution, tracing its origins from Eugene Stoner's AR-10 and AR-15 designs at Armalite to its widespread adoption and subsequent variants by Colt. It details critical design changes, operational issues encountered in Vietnam, and the development of the M16A1, M16A2, and M16A4, highlighting key technical specifications and historical context. The narrative emphasizes how the M16 platform, despite initial controversies, became a foundational design for modern firearms, influencing the ubiquitous civilian AR-15.

This video highlights the iconic Lee Enfield bolt-action rifle, emphasizing its historical significance with the British infantry during both World Wars. It details the rifle's design, including its use of smokeless powder and a 10-round magazine, which contributed to its rapid firing rate of up to 20 rounds per minute. The Lee Enfield is praised for its durability and reliability, remaining in service until the 1950s and still regarded as one of the best bolt-action rifles ever created.

This comprehensive lesson details the Japanese Type 99 Short Rifle, from its development and adoption of the 7.7mm cartridge to the progressive simplifications made during wartime production. It covers manufacturing locations, serial number systems, and the evolution of the rifle into 'last-ditch' variants, highlighting the trade-offs between mass production needs and original design intent. The instruction emphasizes the historical context and technical details of these iconic rifles.

This video from Forgotten Weapons, hosted by Ian McCollum, provides an expert look at two rare Swiss Schmidt Rubin rifles: the M1900 Short Rifle and the M1905 Cavalry Carbine. McCollum details their historical context, design evolution from earlier models, and specific intended uses, highlighting key differences like the bayonet lug.

This guide details the process of diagnosing and repairing an owner-induced feeding problem in an AR-15 upper receiver, specifically addressing a burr on the barrel extension's feed ramp. Expert gunsmith Chad Albrecht demonstrates meticulous inspection, burr removal, and polishing techniques to restore reliable feeding. The video emphasizes that such modifications, while often overlooked, are valid solutions for specific AR-15 malfunctions.

This guide details a diagnostic technique for AR-15 bolt carrier groups, focusing on efficiency rather than simple pass/fail. Developed by Chad Albrecht of School of the American Rifle, it uses custom gauges and cutaway components to illustrate gas dynamics, critical seals, and potential failure points like gas leaks. This advanced method helps troubleshoot functionality issues and understand the nuances of the AR-15's internal gas system.

This video provides a critical, expert-level inspection of a problematic AR-15 Bolt Carrier Group (BCG) by Chad Albrecht of School of the American Rifle. The analysis details numerous manufacturing defects, including an undersized bolt tail, excessive firing pin protrusion, oversized firing pin and cam pin holes, and a failing headspace check. The content highlights the importance of precision gauging in identifying critical failure points that impact rifle reliability and safety.

This guide details a specialized technique for swapping an AR-15 rear takedown pin without requiring a full disassembly. It leverages insights from Chad Albrecht of School of the American Rifle, emphasizing the use of a modified 1/16 inch Allen wrench or a specialized tool to manage the detent. This method is particularly useful for AR-15 variants with collapsible stocks, offering a more efficient approach to maintenance.