SOLGW Lower & FCD Magazine Catch Compatibility Problem

This video provides a comprehensive, step-by-step guide to building a .300 Blackout AR pistol. Lead Firearms Instructor Caleb from Brownells demonstrates the installation of various components, including receiver sets, barrels, handguards, triggers, and accessories. The guide emphasizes proper tool usage, torque specifications, and functional checks throughout the build process.

This video provides a detailed physical inspection of a Sons of Liberty Gunworks lower receiver. It covers essential checks such as thread fitment, trigger pull weight, bolt catch function, pin hole tolerances, and carrier travel. The instructor demonstrates the use of various specialized tools for accurate measurements and highlights potential tolerance stacking issues.

This video provides a detailed physical inspection and testing procedure for Sons of Liberty Gunworks bolt carrier groups. The instructor demonstrates how to check for proper fit, dimensions, and potential defects using various gauges and visual inspections. Key tests include gas ring functionality, bolt tail and face fit, carrier length, cam pin fit, firing pin protrusion, and extractor clearance, offering insights into ensuring bolt carrier group reliability and performance.

This guide details the process of installing a magazine catch and release on an AR-15 lower receiver. It covers proper spring placement, threading the release, and adjusting for optimal magazine insertion and retention. The instructor emphasizes ensuring the release is not cross-threaded and provides guidance on achieving the correct tension for reliable function.

This video demonstrates a common issue encountered during gas block installation: shallow or improperly tapped threads on the set screw holes. The instructor from School of the American Rifle shows how to identify this problem, where the set screw doesn't fully seat, leading to a false torque reading. A practical solution involving running a tap through the holes to clean and deepen the threads is presented as a quick fix, emphasizing that this is a common gunsmithing task rather than a reason to return a part.

This video demonstrates a common issue with AR-15 magazine catches failing to engage, preventing proper magazine retention. The instructor shows how to diagnose and fix this problem by replacing the magazine catch assembly. It highlights that not all parts are universally compatible and that factors like Cerakote can sometimes contribute to binding.

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.