Prototype Silenced Sten for Paratroops: the Mk4(S)

Alyssa Seymour provides an in-depth look at the B&T KH9S, a modern submachine gun drawing inspiration from iconic WWII and Cold War designs like the Sten and Sterling. The review highlights its unique side-feeding magazine, top-mounted charging handle, and tri-lug barrel for suppressor compatibility, emphasizing its heritage and modern features.

This video features a comparison between two iconic submachine guns: the Sten MkII and the Ingram M10/9. The content is presented with the assistance of John Keene, suggesting an expert perspective. The description highlights the comparison aspect and mentions the specific firearms, with hashtags indicating a focus on "forgotten weapons," SMGs, and the "Sten" and "MAC11" models.

The Sten MkIII submachine gun, produced by the toy company Lines Brothers, was a simplified, fully stamped sheet metal design intended for mass production during WWII. Despite its efficiency (5.5 man-hours per gun), it was considered inferior to the MkII due to quality control issues, leading to its primary use by the UK's Home Guard. Approximately 874,000 MkIIIs were manufactured before production ceased in late 1943.

The Sten MkII, developed by Harold Turpin, was a simplified and more compact submachine gun designed for paratroopers and resistance groups. Key innovations included a quick-removable barrel, a rotating magazine well for flat packing, and a simplified stock for ease of manufacture. Despite its basic appearance, the MkII was produced in vast numbers, with approximately 2.6 million units made, making it the most common Sten variant.

The Pleter M91 is a Croatian submachine gun developed in 1991 by Oroplet, with approximately 4,500 units produced. It features a Sten-style bolt and action, with a grip and trigger assembly loosely derived from the MGV-176. The weapon is full-auto only, uses modified Uzi magazines, and lacks a manual safety, relying on the charging handle to lock the bolt. Its design philosophy emphasized simplicity, though it's more sophisticated than a basic Sten.

B&T is releasing two new Pistol Caliber Carbines: the KH9S, a Sten-style PCC with a folding side-loading magazine, and the KH9B, a Bizon-inspired PCC featuring a high-capacity 50-round helical magazine. Both are chambered in 9mm and build upon the evolution of the KH9 platform, known for its unique trigger system and Swiss engineering. Pricing is anticipated to be similar to the KH9 Covert, with the KH9B potentially higher due to its specialized magazine.

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.