2 PSA Upper Receiver Autopsies - Part 2/3

This video provides a technical autopsy of two Palmetto State Armory AR-15 upper receivers, led by Chad Albrecht of the School of the American Rifle. The process involves detailed checks of torque, barrel extension clocking, sight alignment, muzzle device timing, and gas system function. Live fire testing confirms reliable cycling and bolt lock, with minor issues like extractor springs noted but deemed acceptable for the units' intended purpose.

This guide details the process of staking AR-15 carrier key screws, a critical step for preventing loosening under operational stress. It covers historical staking methods, modern techniques like OCKS, and specific torque values for different generations. The instruction emphasizes the importance of proper staking for reliability, drawing on historical military technical manuals.

This guide details the assembly of a budget-friendly AR-15 rifle, focusing on cost-effective component selection without compromising core functionality. The build prioritizes investment in critical parts like the barrel and BCG while saving on furniture and lower receivers. It highlights performance data, including accuracy with various ammunition types and the impact of heat on sustained fire accuracy.

This guide details how to assemble a budget-friendly Geissele-inspired AR-15 build under $1100, focusing on cost-saving strategies without compromising essential reliability. It covers sourcing components like uppers, BCGs, triggers, and furniture, leveraging sales and 'blemished' parts. The build incorporates an Olight Odin light and a Sig Sauer Romeo 5 optic, all finished in the distinctive Desert Dirt Color (DDC). Instruction is provided by 704 Tactical, demonstrating practical knowledge of AR-15 components and market pricing.

This video provides a preview of an AK-47 trigger kit from Texas Triggers USA, unboxing the components and discussing their features. The speaker, an enthusiast from PoorBoy Arms, highlights the flat-faced trigger design and compatibility with PSA GF3 models. A follow-up video is promised to demonstrate the installation and performance of the kit.

This comprehensive guide details the process of cleaning an AR-15, as demonstrated by Clint and Kaydi from Classic Firearms. It covers safety checks, complete disassembly of the Bolt Carrier Group (BCG), thorough cleaning of all components including areas prone to carbon fouling, barrel and chamber cleaning, lower receiver maintenance, and proper reassembly. The video emphasizes the importance of regular cleaning for maintaining firearm reliability, especially after extensive use.

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.