PSS: Russia's Silent Captive-Piston Handgun

The Russian PSS is a unique semi-automatic handgun utilizing captive-piston ammunition (SP-4) for extreme sound suppression. This system seals propellant gases within the cartridge case, but minor leakage results in a report similar to a suppressed .22LR. Its design incorporates a high cartridge feed to manage wadcutter-style projectiles, though it requires significant mechanical compromises and is not truly silent.

The PSS 'Silent' pistol, developed in the Soviet Union, utilizes unique captive piston ammunition (SP-4) to achieve internal suppression, eliminating muzzle flash and blast. Its design, featuring a sliding chamber and Makarov-derived controls, prioritizes covert operations for special forces and intelligence units. While effective, its deep grip and specialized ammunition present certain ergonomic and logistical considerations.

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.