L4: The Bren in 7.62mm NATO

This guide outlines the process of converting a WWII-era Bren Gun to 7.62mm NATO, a modification undertaken by South Africa between 1972 and 1976. The conversion involved replacing the barrel, modifying the ejector block for magazine compatibility, and updating the bolt's extractor. The process, detailed by Ian McCollum, highlights the technical challenges and historical context of this significant firearm adaptation.

This guide details the disassembly of the FN FAL 50.63 Para, highlighting its unique internal recoil spring system housed within the dust cover, a modified bolt carrier, and a reinforced dust cover. It also covers the side-folding stock, specialized rear sight, shortened barrel, and folding charging handle, emphasizing the design adaptations for paratrooper use. Instruction is provided by Ian McCollum of Forgotten Weapons, demonstrating deep expertise in FAL variants.

This guide details the complex process of converting Colombian M1 Garands from .30-06 Springfield to 7.62mm NATO. It involves significant barrel shortening, re-chambering, and modifications to the stock and gas system. The conversion also includes the unique addition of tactile indicator holes in the furniture for caliber identification. This process was undertaken by Colombia's Industria Militar (INDUMIL) to modernize their Garand fleet.

This video provides an in-depth look at H&R's experimental M14 Guerrilla Gun, a rare select-fire variant developed for potential jungle warfare applications. Expert Ian McCollum details its unique underfolding stock, shortened barrel, and modified gas system, highlighting its historical significance and rarity as a transferable M14 prototype. The discussion covers its development between 1961-1963, aiming for a lighter, more compact rifle for conditions like those in Laos.

This entry details the experimental conversion of a Swedish AG-42B Ljungman rifle to 7.62mm NATO, focusing on its unique short-stroke gas piston system. Ian McCollum, demonstrating high expertise, explains the historical context and mechanical modifications. The guide covers disassembly and the function of the adjustable gas block and dual recoil springs, highlighting the rarity of this approximately 10-unit production.

This video delves into an experimental conversion of the AG-42B rifle to fire 7.62mm NATO ammunition. It explores the historical context of this modification, likely for interoperability with NATO standard cartridges. The content focuses on the AG-42B and its transformation, appealing to enthusiasts of historical firearms, military arms, and unique gunsmithing projects.

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.