Swiss ZfK-55 sniper rifle

The Swiss ZfK-55 sniper rifle, adopted in 1955, was a purpose-built precision rifle based on the K31 action. It features significant mechanical upgrades including a heavy barrel, muzzle brake, semi-pistol grip, and an integrated bipod. A unique 15-degree clockwise rotation of the action allows for stripper clip use with a center-mounted scope, a 3.5x Kern optic being standard. Despite its quality, the rifle's 13.5 lb weight and non-locking bipod present some drawbacks.

The K31 Swiss rifle is highlighted as one of the most accurate military surplus firearms. It features a distinctive straight-pull bolt action, a 6-round detachable magazine often loaded with stripper clips, and a unique ring-style safety. The rifle demonstrates excellent accuracy and rapid cycling capabilities during live fire.

The Swiss K31/42 and K31/43 sniper rifles are rare, experimental WWII-era firearms based on the K31 carbine. They feature a unique, low-profile periscope-style optic integrated into the receiver, with the K31/42 offering 1.8x magnification and the K31/43 offering 2.8x. Mechanically identical to the standard K31, these rifles are chambered in 7.5x55mm Swiss and are highly collectible due to their historical significance and limited production.

This review delves into the rare Swiss Schmidt Rubin M1900 Short Rifle and M1905 Cavalry Carbine. It highlights the evolution of the Schmidt Rubin action, moving locking lugs to the receiver's middle for a shorter, more efficient design. The M1900 was for support troops, while the M1905 lacked a bayonet lug, suited for cavalry.

This video details the rare ZK-31, a Swiss K31 rifle modified for Israeli forces during their War of Independence. It highlights the rifle's clandestine acquisition, unique scope mounting system with quick-detach capabilities, and specific markings designed for deniability. The discussion also covers the Kahles scope's adjustable BDC rings and the practical advantage of the left-offset mount for reloading.

The Stamm-Saurer Model 1907 was a rare Swiss straight-pull bolt-action rifle developed by Hans Stamm for Saurer to compete for military contracts. Despite its high quality and innovative features like a unique rear sight and integrated cleaning rod, it was rejected by the Swiss military. The rifle competed against the Schmidt-Rubin K11 and G11, ultimately losing due to existing institutional knowledge of the Schmidt-Rubin and Saurer's refusal to license production.

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.