Bushmaster Assault Rifle: A Stoner-Inspired 70s Carbine

This guide details the field stripping process for the early Bushmaster Assault Rifle, highlighting its unique long-stroke gas piston system and construction distinct from later AR-15 variants. It also provides an overview of the Bushmaster Arm Pistol, emphasizing its compact design and innovative rotating grip for ambidextrous operation. The content is presented with high authority by a seasoned firearms reviewer, offering historical context and technical insights into these historical firearms.

This video provides an expert-level deep dive into the Stoner 63, 63A, and Mk23 series firearms, focusing on their unique modular design and mechanical intricacies. The presenter, Ian McCollum, highlights the system's core innovation: a single receiver configurable into multiple weapon types, from light machine guns to rifles, by altering feed mechanisms and bolt configurations. The explanation emphasizes the engineering genius behind its ability to switch between open-bolt (for machine gun roles) and closed-bolt (for rifle roles) firing modes using interchangeable parts within the same receiver housing.

This guide details the field stripping and configuration changes for the Robinson Armament M96 Expeditionary Rifle, a semi-automatic clone of the Stoner 63/63A. It covers disassembly of the barrel, bolt carrier group, and trigger group, highlighting the M96's unique internal mechanics and long-stroke piston system. The guide also explains the process for converting the rifle to the top-fed 'Bren' configuration, emphasizing the modularity of the platform. Instruction is provided by an expert with high authority in military-style firearms.

This guide details the modularity of the Stoner 63 system, as demonstrated by Ian McCollum. It covers how the receiver can be flipped for different feeding mechanisms and how various components like trigger groups, barrels, and stocks can be swapped to reconfigure the firearm. The video highlights the system's adaptability for different roles, from rifle to light machine gun, and even specialized vehicle mounts.

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.