Colt SMG: First of the 9mm ARs

This expert guide from the School of the American Rifle details how to identify and address rough carrier key bores in AR-15 bolt carrier groups. The instructor, demonstrating expert knowledge, explains how these manufacturing defects, particularly on Colt components, can lead to premature wear on the gas tube and reduced reliability. Solutions involve replacing the defective carrier key to ensure smooth operation and longevity of the firearm.

This video delves into the history and technical aspects of Colt's four-way enhanced rifle fire control group, a system offering Safe, Semi, Auto, and Burst modes. The expert instructor, with extensive experience at Colt, details the evolution of the burst cam, patent information, and specific rifle models that utilized this complex mechanism. It highlights practical challenges and historical context, including issues faced by the Greek Army and the eventual discontinuation of the program.

This guide outlines the conceptual assembly of the unique XR-86 custom rifle, a project by Wilfred Ellis. It details the integration of parts from an M60, M14, and AR-15, highlighting the custom gunsmithing required to combine these disparate systems into a functional firearm. The process involves careful mating of bolt, gas, and trigger mechanisms.

This guide details the field stripping process for the Beretta AR-70, a Cold War-era assault rifle. The video, presented by Brandon Herrera, demonstrates a comprehensive disassembly, highlighting its AK-derived piston system and AR-style pins. Herrera, exhibiting high authority and deep knowledge, walks viewers through each step, emphasizing the importance of understanding the rifle's internal mechanics for maintenance and reliability.

This guide details the installation and testing of the Unrivaled LSD, a 3D printed muzzle device that also functions as a suppressor mount. The process involves safely attaching the device to an AR-style rifle, conducting live fire to assess its effectiveness, and then attaching and testing a compatible suppressor. The video highlights the dual functionality of the muzzle device, offering a practical solution for firearm owners looking to enhance their shooting experience.

This guide details a DIY camouflage painting technique for AR-15 style rifles, demonstrated by an experienced instructor. It covers preparation, application of multiple paint layers using stencils, and finishing touches. The instructor emphasizes personalization over resale value, encouraging viewers to customize their firearms for practical or aesthetic reasons.

This guide details the specific technique for separating two MAS-36 rifles that have been inadvertently locked together by their bayonets. It outlines the historical context of this issue, the modification made to the bayonet to resolve it, and the step-by-step procedure for disengagement. The technique requires precise alignment and the use of a pointed tool to access the internal release mechanism, as demonstrated by firearms expert Ian McCollum.

This guide details the loading and firing procedure for the M134 Minigun, as explained by Ian McCollum. It covers manual indexing of the barrel cluster, feeding the ammunition belt, engaging controls, and firing. The guide also touches upon the weapon's spin-down inertia and the function of modern clutch systems. Expert instruction from a recognized firearms historian highlights the technical aspects of operating this powerful weapon system.

This guide details the operational features of the H&K G11 K2, a prototype assault rifle known for its caseless ammunition and unique rotating drum bolt. It covers the selector settings, magazine capacity, integrated optics, and the internal action designed for recoil management during high-rate-of-fire bursts. Expert insights from Ian McCollum highlight the historical context and technical innovations of this advanced firearm.

This guide details the operation of the German L.Gr.W.36 50mm light mortar, as demonstrated by expert Ian McCollum. It covers assembly, leveling procedures, ammunition handling, and live fire execution, emphasizing the difficulty in visually tracking the projectile. The instruction highlights the importance of proper setup for accuracy.