AR15 Gas Tube Gauge & Instructions

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 YouTube video focuses on a common and crucial aspect of firearm ownership: the buffer system. The title, "What buffer system do you use?", directly asks for viewer input on their preferred buffer systems. While the description is empty, the title alone indicates a discussion or inquiry into different buffer systems, which are vital components for the reliable operation of firearms, particularly semi-automatic rifles like the AR-15 platform. Viewers interested in firearm maintenance, customization, or performance optimization would find this content relevant.

This video explores seven affordable upgrades for the AR-15 platform that are effective and worth the investment. It covers a range of accessories and modifications, including slings, triggers, charging handles, rail covers, foregrips, hand stops, grip tape, and even custom paint jobs. The content aims to provide practical advice for AR-15 owners looking to enhance their firearm's functionality and aesthetics without breaking the bank, catering to both new and experienced builders seeking to improve their rifle.

Elliott Delp showcases his favorite AR-15 build, a compact and mobile SBR emphasizing both aesthetics and functionality. The build features a Daniel Defense upper receiver known for reliability, paired with traditional A2 sights and modern accessories like a vertical foregrip and red dot optic. Live-fire demonstrations highlight its performance and manageable recoil.

This video focuses on the process of upgrading an AR-15 rifle. While the description is brief, the title clearly indicates modifications and potential part installations. This type of content typically appeals to firearm enthusiasts interested in customization, gunsmithing, and improving their shooting platforms. Viewers can expect insights into available upgrades and how they might enhance performance or aesthetics.

This video from Brownells features Steve and Caleb reviewing the Magna-Tip® Screwdriver Set, highlighting its importance as a gunsmithing tool. They discuss the advantages of this modular system, including its versatility, durability, and precision, emphasizing the significance of hollow-ground bits and proper handle selection. The review contrasts the Magna-Tip® system with lower-quality alternatives, explaining how the right screwdriver prevents screw damage and covers the variety of screws encountered in firearms. The presenters touch on essential gunsmithing toolkits and answer viewer questions, providing valuable insights for both professional gunsmiths and hobbyists.

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 demonstrates a specialized technique for swapping an AR-15 rear takedown pin without full firearm disassembly. It highlights the use of a custom-fabricated tool, often made from a 1/16 inch Allen wrench, to depress the detent. The method allows for efficient pin replacement, particularly useful on rifles with staked castle nuts, by leveraging the old pin to guide the new one into place.