AR Touchup Chemicals - Aluminum Black & Cold Blue

This YouTube video offers practical tips and techniques for polishing stainless steel firearm components. The content focuses on achieving a high-quality finish on gun parts, likely aimed at gunsmiths, hobbyists, and firearm enthusiasts looking to customize or maintain their weapons. The video emphasizes real-world application and likely demonstrates various methods and tools used in the polishing process for stainless steel firearms.

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.

The Yankee Marshal discusses the increasing difficulty in finding professional gunsmiths and highlights the specialized tools and expertise required for tasks like fitting a 1911 barrel or safety. While he performs much of his own firearm maintenance, he acknowledges that certain precision work necessitates professional gunsmithing, contrasting DIY methods with the requirements of professional metal smithing.

This video from CMMG provides a detailed, step-by-step guide on how to install the forward assist adapter, anti-bounce weight, and sear trip kit for their .22 Conversions. It aims to answer common customer inquiries and demonstrates the process clearly. The description also encourages viewers to sign up for CMMG Insider for future updates and directs them to the CMMG website and social media channels (Instagram and Twitter).

This video addresses a practical question regarding firearm maintenance and care: whether leaning a gun barrel can cause it to warp. The content aims to provide a definitive answer to this common concern among firearm owners. It delves into the physical properties of gun barrels and the forces they are subjected to during storage or handling, explaining the likelihood of such damage occurring from simple leaning. The video focuses on providing clear, evidence-based information rather than demonstrating specific firearm models or shooting techniques.

This video provides a clear, step-by-step tutorial on installing an AK FRT-style trigger. It covers complete disassembly, installation, reassembly, and function checks, emphasizing safe handling and legal compliance. The tutorial aims to be approachable for authorized AK owners and is intended for informational and educational purposes only, explicitly stating no rate-of-fire enhancing techniques or unsafe practices are demonstrated. The video also mentions compatibility with multiple AK platform variants and encourages viewers to subscribe for more content.

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.