Ukrainian or Russian Partisan Modified MP40

This video provides a detailed, step-by-step guide to the full disassembly of the WW2 3" M5 Anti-Tank Gun. The process, demonstrated by an experienced technician, involves methodical removal of components like the pintle, traverse and elevation mechanisms, gun shield, recoil assembly, and finally separating the barrel from the carriage. Proper use of tools, including a forklift for heavy parts, is highlighted.

The STG-M1A is a unique firearm that legally functions as a Stemple 76/45 while visually mimicking a Thompson submachine gun. It achieves this by housing an unmodified Stemple receiver tube within a custom-built Thompson-style receiver housing. This build offers the aesthetic and ergonomics of a classic Thompson at a lower cost and with less wear on rare original parts.

This video details the restoration of a PPD-40 submachine gun, showcasing its open-bolt action and historical pitting. The presenter, a firearms collector, demonstrates the cleaned and preserved mechanics of the vintage firearm. The content also features a lighthearted moment with kittens and poses a question to the audience about the firearm's firing capability.

This video provides an in-depth look at the PPSH-41's direct blowback operating system, explaining its mechanical simplicity and high cyclic rate. Brandon Herrera details how Newton's Third Law applies to the bolt's inertia and recoil spring's function. The explanation covers the fixed firing pin, slam-fire mechanism, and the trigger's role in an open-bolt system, contrasting it with locked-breech designs for high-pressure cartridges.

This video highlights a surprising modification to an MP5 firearm, specifically the integration of a 3-position lever. While the description is minimal, the title suggests a focus on the functionality and potential customization of this iconic firearm platform. The content likely delves into the technical aspects of this modification, showcasing its operation and potentially its benefits or drawbacks.

This video details the CNC machining process for recreating the nose cone of the 'Little Boy' atomic bomb. It showcases material preparation, high-pressure metal spinning over a mandrel, waterjet trimming for precision, and final assembly onto a replica bomb casing. The process highlights advanced fabrication techniques used in historical ordnance replication.

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.