Project PRAK: Converting the CZ50 Pistol to 9x18mm Makarov

This video details Project PRAK, a 1966 Czech experiment to convert CZ Model 50 pistols to fire 9x18mm Makarov ammunition. The conversion involved external slide modifications, including restamping the caliber, and a substantial internal change with a new, hand-fitted barrel. Despite firing 3500 rounds, the project was ultimately abandoned due to encountered issues.

This video showcases a fully metal, custom VZ 61 pistol chambered in .32 ACP. The title highlights its unique all-metal construction and custom nature, differentiating it from standard models. The description reinforces these points. The video likely focuses on the build, aesthetics, and potentially the performance of this specialized firearm.

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.