Colt LE-901 Modular Multi-Caliber AR: A Well-Designed Failure

This guide details the process of converting the Faxon ARAK-21 XRS between calibers, a key feature highlighted by Matt Carriker. The video demonstrates swapping barrels and bolts to switch from 5.56 NATO to 7.62x39. This modularity allows for significant versatility in ammunition choice.

This video showcases the Q "The Megafix" rifle, a lightweight magnum powerhouse featuring a .300 Win Mag chambering and an 18-inch Proof Research barrel. Expert insights are provided on its modular design, including an AR-style control interface and a 45-degree bolt throw. The demonstration highlights a unique quick-change barrel system, allowing for rapid barrel swaps by loosening a few screws. Live fire testing by Classic Firearms confirms its potent performance despite noticeable recoil.

Roy Huntington, an expert reloader with decades of experience, reviews the RCBS MatchMaster Multi-Cartridge Reloading Block. He highlights its superior stability and multi-caliber capacity compared to traditional wooden blocks, which often lead to case instability and powder spills. The block's machined aluminum construction, non-slip feet, and tiered hole design significantly improve the reloading workflow and safety.

This video provides an expert-level demonstration of the DRD Tactical take-down rifle system, showcasing the ease and speed of disassembly and reassembly. The presenter highlights the tool-less design and the ability to maintain zero after reassembly, a critical feature for portable, modular firearms. The content is presented with high authority, featuring a manufacturer representative and a well-known industry reviewer.

This guide details the field stripping and quick-change barrel process for the Beretta ARX 100, as demonstrated by hickok45. It covers the simple two-tab system for barrel removal and highlights the rifle's modularity. hickok45, a recognized expert in firearm field testing, provides insights into the rifle's operation and potential ergonomic considerations.

This guide details the process of performing a caliber conversion on the Desert Tech SRS-A1 Covert rifle, a modular bullpup system. It emphasizes the use of a specific torque wrench for barrel changes, highlighting the rifle's quick-change capability. The process involves safely removing and installing barrel assemblies to switch between calibers like .308 Winchester, .300 Win Mag, and .338 Lapua, crucial for adapting the rifle to different long-range shooting scenarios.

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.