PM63 Rak: An Interesting Polish SMG/PDW Hybrid

Gearhead Guns is producing a Type 100 Nambu PCC recreation, with the first batch shipping around March. It's available in 9mm Parabellum with 9-inch or 16-inch barrel configurations for SBR compliance. Customization options include various metal and wood finishes, with optional bayonet lugs.

The CBJ-MS is a modernized Swedish submachine gun designed by Bertil Johansson, aiming for rugged durability over polymer PDW fragility. It features a unique muzzle sleeve for bipods, a forward grip with magazine storage, and a progressive trigger. The design draws inspiration from the Swedish K for reliability and utilizes a telescoping bolt similar to the Uzi, allowing for a compact receiver made from stamped stainless steel.

The CBJ-MS is a modernized 9mm submachine gun based on the Swedish K, designed as a compact PDW-style platform. It features a unique progressive trigger for semi and full-auto fire without a selector, a grip safety, and a vertical foregrip that stores a spare magazine. The muzzle is compatible with standard M16 bipods for added stability.

The FN P90 is a unique bullpup Personal Defense Weapon (PDW) designed for armor penetration using a high-velocity 5.7x28mm round. Its innovative design features a sideways-feeding rotary magazine and ambidextrous controls with bottom ejection. Internally, it operates via simple blowback with an added weight to prevent bolt bounce, ensuring reliability.

This comparison between the MP-40 and PPSh-41 highlights differing design philosophies. John Keene favors the MP-40 for its ergonomics and adaptations for higher magazine capacity, while Ian McCollum prefers the PPSh-41 for its high rate of fire and semi-auto selector. Both speakers acknowledge the controllability of their preferred weapon despite its characteristics.

The MP5SD is an integrally suppressed submachine gun that uses a ported barrel to slow 9mm rounds below the speed of sound, achieving exceptional quietness. While accurate and smooth due to its roller-delayed blowback system, it requires frequent maintenance due to carbon buildup. Its stealth capabilities are remarkable, with downrange reports being nearly imperceptible.

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.