How To Build An AR-15 Upper

This video demonstrates the assembly of an AR-15 lower receiver, focusing on the installation of critical components like the trigger group, safety selector, and buffer system. The builder, exhibiting advanced armorer skills, utilizes specialized tools and techniques for a precise build. While edited for entertainment, the process highlights the methodical approach required for a reliable firearm.

This YouTube video appears to explore modifications or accessories that allow a pistol to be used in a manner or configuration resembling an AR-15 platform. The title suggests a transformation or adaptation of a handgun to incorporate features or functionalities typically associated with AR-15 rifles. The content likely focuses on specific products, custom builds, or conversion kits designed to achieve this hybrid functionality, potentially covering aspects like improved ergonomics, stability, or sighting systems. The video aims to demonstrate how a pistol can be made to feel or perform more like a rifle.

This entry details the unique XR-86 custom rifle, a 1986 build by Wilfred Ellis. It masterfully combines components from an M60 (flash hider), an M14 (gas system), and an AR-15 (trigger, bolt, locking system). The AR-15 trigger is notably rotated 90 degrees, and its bolt is integrated with the M14 gas system, showcasing advanced gunsmithing.

This video from School of the American Rifle highlights critical manufacturing defects in AR-15 bolt carrier keys, specifically focusing on rough internal bores. Lead instructor demonstrates how a poorly finished carrier key can cause significant friction, premature wear on components like gas tubes, and operational issues, contrasting a problematic new Colt carrier with a well-functioning older model. The expert emphasizes the importance of a smooth bore for reliable function and longevity of expensive parts.

This guide, presented by an expert firearms instructor, details the benefits and installation of adjustable triggers for platforms like the AR-15. It covers understanding trigger mechanics, adjusting pull weight, reset, and overtravel, and highlights ideal users for these components. The instruction emphasizes safety and practical application for competition and precision shooting.

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 TFBTV episode identifies the top 5 most reliable firearms across different categories: Glock (handgun), Uzi (SMG), Mauser 98 (bolt-action), Remington 870 (shotgun), and Galil (self-loading rifle). The selections prioritize mechanical simplicity, proven track records, and resilience in harsh conditions, often outperforming more complex designs. The video highlights specific features contributing to their reliability, such as the Uzi's single moving part and the Galil's robust construction.

This review highlights five hilariously impractical firearms for concealed carry. It details the slow, complex loading of black powder firearms, the impractical size of the Mauser C96 and full-size .22 pistols for concealment, and the dangerous accidental discharge flaw in the Type 94 Nambu. The video emphasizes that while historically significant, these guns are unsuitable for modern self-defense.

The Ruger Mini-14 offers distinct advantages over the AR-15, including a lower profile, better stock trigger on modern variants, superior maneuverability with folding stocks, a longer sight radius, and a cleaner piston operating system. Modern Mini-14s also boast improved accuracy (around 2 MOA), cold hammer-forged barrels for durability, and optional all-stainless construction for corrosion resistance. While the AR-15 remains more modular and generally cheaper, the Mini-14 excels in specific areas.

This TFBTV episode reviews five excellent surplus rifles available for under $500, focusing on historical significance and affordability. Featured firearms include the Lee Enfield, Yugoslavian Mauser 98, Swiss K31, MAS 49/56, and a debate between the SKS and Mosin Nagant for the final spot. The discussion highlights unique actions, historical context, and the availability of surplus ammunition.