Project Lightening Episode 03: Walking Fire

The Bren MkI is highlighted as a feature-rich light machine gun from World War Two, notable for its stabilization handle and innovative 30-round magazine design that prevents rim lock. Its operating mechanism fires from an open bolt, utilizing a gas piston system for cycling. The fire selector offers automatic, semi-automatic ('Repetition'), and safe modes, with a dust cover protecting the magazine well.

This challenge pits a Swiss competitor, Pascal, against the infamous Chauchat Mle 1915 light machine gun. Pascal demonstrates surprising proficiency in a 'walking fire' stage and offers practical advice on firing modes, recommending semi-auto for precision and full-auto for dug-in positions. Despite the Chauchat's historical reputation, Pascal's performance suggests its effectiveness can be influenced by shooter skill.

The LMG-25, Switzerland's first modern light machine gun, features a unique toggle-locking system developed by Adolf Furrer. Chambered in 7.5x55mm Swiss, it offers select-fire capability and a 30-round magazine compatible with the Stgw 57. A notable feature is the Advanced Primer Ignition (API) system, which reduces felt recoil and rate of fire by igniting the primer while parts are still moving forward.

The Huot Automatic Rifle, a Canadian WWI prototype, converted the Ross straight-pull rifle into a machine gun. It featured a unique 25-round ratchet-driven drum magazine and a gas-operated system. A barrel shroud used muzzle blast to create a cooling airflow, allowing for a lighter barrel. Despite its innovative design, it was not adopted, with the British military favoring the Lewis gun.

The Negev 7 is an Israeli 7.62 NATO chambered light machine gun, a modernized evolution of the 5.56mm Negev. Key features include a stable receiver-mounted optic rail, a quick-change barrel system, and a long-stroke gas piston operation. Unlike its predecessor, it is belt-fed only, utilizing 100 or 125-round boxes, and retains a rare semi-automatic fire mode for zeroing.

The Praga I-23 is a rare prototype belt-fed light machine gun that predates the ZB26. It features a unique bottom-feeding belt box and a gas-operated system with an expansion chamber. Understanding its feeding and firing cycle reveals key developmental steps towards later Czech designs.

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.