Zastava M51: A Compact Yugoslav Prototype SMG

The Yugoslav M56 submachine gun, developed after WWII, aimed to improve upon the M49's issues. It features an MP40-like design, fires 7.62x25mm Tokarev, and includes a simple safety catch. However, a critical design flaw allows for improper reassembly, posing a significant safety hazard.

This review delves into the unique characteristics of Yugo pattern AKs, particularly Zastava rifles, explaining their historical development driven by Yugoslavia's non-aligned status. Key differences include overbuilt 1.5mm receivers and bulged trunnions designed for rifle grenade launching. Modern Zastava USA imports offer improved quality over older Century Arms sporterized versions, with a growing aftermarket and available models like the M70, M90, and M77.

This YouTube video provides a review and historical overview of the Yugoslavian SKS 59/66 A1 rifle. The content creator, 'The Gun Dungeon', shares insights into this specific firearm model, touching on its background and features. The description also includes links to merchandise, social media profiles (Instagram, Facebook), and content platforms (Rumble, Patreon), indicating an effort to build a community and offer various avenues for engagement.

The Yugoslav M70A is a unique AK variant featuring a rare last-round bolt hold-open mechanism, uncommon for the platform. This feature, along with its milled receiver and grenade launcher capabilities, sets it apart from standard AKs. Early Yugoslav AK development, including the M64 and M70 series, shows significant divergence from Russian designs, with the M70A's hold-open being a notable innovation that was later removed for compatibility.

The Zastava M90 is a Serbian-made 5.56mm AK variant with a robust RPK-style receiver and an 18.1-inch barrel. Key features include an adjustable gas block for tuning performance and a side rail for optics. While generally reliable, users must use Zastava-pattern 5.56 magazines, as others may not be interchangeable.

This review compares the Zastava M76 and M91 DMR rifles. While the M76 offers a preferred ergonomic design with its pistol grip and inline scope, it suffers from reliability issues common in US-built kit guns. The M91, a factory-built import, demonstrates superior reliability for practical use, despite its less ergonomic thumbhole stock and offset optic. Both rifles exhibit comparable accuracy at 100 yards.

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.