Incompatible Geissele Charging Handle & Geissele Upper

This guide details the assembly and configuration of BCM MCMR MK2 ELW AR-15 uppers, as demonstrated by Lucas Botkin. It covers unboxing, preparation, and the installation of various high-end optics and accessories for different tactical applications. The process emphasizes consistency for testing and performance evaluation.

This video provides an in-depth tour of Louisiana Firearms, highlighting their extensive custom AR-15 build services and unique inventory. The shop emphasizes a customer-centric approach, offering personalized consultations and a comprehensive gunsmithing setup. They showcase a variety of high-end components and exclusive collaborations, including their own LWRC IC-556 OTG rifle, and detail their efficient NFA item sales process.

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.