Making Do: South Africa's 7.62mm NATO Bren Gun Conversions

Brandon Herrera unveils the 'Kalashnibren,' a unique custom firearm blending AK-47 and Bren gun elements, built as a viewer promise. The build features a top-loading magazine, offset sights, and a complex external trigger linkage. Despite awkward ergonomics and being labeled 'cursed,' it proved functional and surprisingly accurate during test firing.

This video details the Type 99 Nambu, Japan's most produced WWII LMG, and a common modification to convert it to fire 7.62mm NATO. Due to the scarcity of original 7.7mm Japanese ammunition and magazines, re-chambering the barrel for .308 Winchester is a practical solution for shooters. The modification maintains accuracy and reliability, with demonstrations showing effective prone, off-hand, and left-handed shooting.

This video details a rare Colombian conversion of the M1 Garand rifle to 7.62mm NATO. Key modifications include shortening the barrel and stock, and adding tactile indicators to the wood furniture. These conversions were made by INDUMIL in Colombia around 1974 to standardize on the NATO round.

The US Navy converted M1 Garands to 7.62mm NATO as the Mk2 Mod1 due to reluctance to fund new M14 rifles. Early Mk2 Mod0 conversions using chamber plugs failed, leading to the Mk2 Mod1's adoption of new 7.62mm barrels. These conversions required opening the gas port and adding a magazine spacer to prevent .30-06 loading. Authentic Mk2 Mod1 rifles can be identified by specific barrel markings and are best verified with CMP documentation.

This guide details the disassembly and gas system adjustment of a rare experimental AG-42B rifle converted to 7.62mm NATO. The conversion replaces the original direct gas impingement with a short-stroke piston system. Expert Ian McCollum demonstrates the unique piston design, dual recoil springs, and adjustable gas block, highlighting the modifications made to the receiver. This information is crucial for understanding the technical intricacies of this unique firearm.

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 video details the unique 'French Finger Trap' issue with the MAS-36 rifle's bayonet, where two rifles can become unintentionally locked together. A 1951 French arsenal memorandum identified this problem, proposing a simple modification to the bayonet handle. Drilling a small hole allows a tool, like a firing pin, to depress the internal spring, enabling the separation of locked rifles.

The M134 Minigun is a scaled-down 7.62 NATO rotary cannon, requiring 24V DC power and consuming 1.5 kW. Its high rate of fire (3,000+ RPM) is essential for aircraft engagement windows. The complex delinker mechanism is critical for feeding ammunition, and practical hand-held use is impossible due to weight and recoil. Live fire demonstrates rapid ammunition consumption and the need for indirect aiming.

The H&K G11 is a revolutionary prototype assault rifle designed in the late 20th century, notable for its caseless ammunition and unique rotating drum bolt mechanism. Despite advanced features like a 2000 RPM burst fire rate and integrated optics, its development was ultimately halted by geopolitical shifts and cost concerns.

This video demonstrates the assembly and live-fire of the German 1936 pattern light mortar (L.Gr.W.36). It highlights the mortar's leveling mechanism for accuracy and the difficulty in visually tracking its 50mm projectiles after firing. The content showcases historical military hardware and its operational use.