Prototype Johnson Model R Military Rifle

The Kholodovskii Mosin Nagant was an ambitious prototype aiming to improve the standard M91 rifle after the Russo-Japanese War. It featured significant weight reduction through aluminum components and barrel fluting, along with ergonomic and sight enhancements. Despite its innovative design, it failed field tests due to high production costs and poor performance, ultimately being scrapped in favor of simpler models.

The M1941 Johnson rifle, developed by Melvin Johnson, was intended as a 'substitute standard' alongside the M1 Garand. It features a unique 10-round rotary magazine, allowing for continuous topping off, and an 8-lug rotating bolt that inspired the AR-15 design. While innovative, its enclosed receiver made malfunction clearing difficult, a drawback in harsh combat conditions.

The H&K XM-8 was a significant contender to replace the M4/M16, featuring a modular design with multiple barrel lengths and an integrated optic with laser/illuminator. Its AR-180 style gas system and polymer construction with a metal trunnion offered a modern approach. The rifle boasted ambidextrous controls and a unique paddle magazine release, showcasing advanced ergonomics for its time.

This video details a rare 1942 British prototype rifle designed for simplified production as an alternative to the Lee-Enfield No. 4 Mk I. Key features include a receiver machined from square stock, front locking lugs on the bolt, and an integrated, stowable spike bayonet. Despite its innovative design for manufacturing efficiency, the project was likely abandoned due to the war's changing tide and the decision to continue production of the established No. 4 rifle.

The Johnson M1941 rifle, designed by Melvin Johnson, was an alternative to the M1 Garand, featuring a unique short-recoil operation and a 10-round rotary magazine. Despite limited US adoption, it was used by Dutch forces and US Para-Marines. Its design, particularly the rotating bolt, influenced later AR-15 development.

This review details the T3E2 Garand, a .276 caliber prototype that nearly became the standard US service rifle in 1932. It highlights key differences from the M1 Garand, including a lighter weight, 10-round capacity, and a muzzle gas trap system. The review explains how logistical concerns regarding existing .30-06 ammunition stockpiles, championed by General MacArthur, ultimately prevented its adoption.

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.