Mark Brown Customs Gas Tube Gauge

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 video introduces the new Bullet Proof® Adjustable Lo-Profile AR-15 Gas System from Wilson Combat, presented by Paul Levy of Brownells. The system features a low-profile gas block made of 4140 steel with an integrated stainless steel gas tube. Its key feature is a slot-head screw allowing adjustment of gas flow through 16 positive-click settings, enabling users to optimize for different ammunition. The self-cleaning mechanism scrapes out carbon fouling with each adjustment. Setscrews secure the block to pre-dimpled barrels, and the straight gas tube simplifies installation. The system is available with various gas tube lengths and for different barrel diameters.

This YouTube video focuses on the process of stainless shim bedding an AR barrel. While the description is brief, it directs viewers to the website for more detailed product information. The title clearly indicates a technical procedure related to AR-15 platform firearms, suggesting a gunsmithing or modification-focused video.

This video showcases the Brownells Browning Hi-Power Full Size 9mm barrel, highlighting it as a drop-in upgrade for owners of the iconic Hi Power pistol. The barrels are manufactured in the USA from high-quality stainless steel, featuring a conventional land-and-groove rifling. A threaded option is also available, catering to those who wish to add suppressors. The description emphasizes precision shooting and durability.

This video showcases new firearm products released on July 27, 2017. Product manager Paul Levy highlights several items, including blank slides for Gen3 Glock 17 and 19 pistols, an AR-15 ambidextrous lower receiver, an AR-15 Raptor-LT charging handle in Flat Dark Earth, and an AR-15 UBR 2.0 collapsible stock also in Flat Dark Earth. A link for more information is provided.

This guide details AR-15 barrel materials and manufacturing processes. 4150 steel, especially Mil Spec variants, offers superior wear and longevity, often enhanced by chrome lining or Melonite treatment. Stainless steel (like 416R) excels in accuracy due to even throat erosion. Cold Hammer Forged (CHF) barrels provide maximum durability for high-volume use. Quality control steps like HPT and MPI are crucial.

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.