Ukrainian Adaptation of PKTs to Infantry Use

This video demonstrates the PKM machine gun's quick-change barrel system, highlighting the functional use of the carry handle for removing a hot barrel. It also showcases the installation of a Rugged Surge 762 suppressor, confirming its belt-fed rating. The expert, Parker, emphasizes proper weapon clearing before maintenance.

The AK-50 V3 project showcases significant engineering advancements in adapting the AK platform for the .50 BMG caliber. Key developments include a stamped RPK-style receiver, a robust recoil management system with a unique buffer, and a hinged piston borrowed from the PKM. Despite manufacturing challenges, the project aims for a production-quality firearm weighing around 29 lbs.

This video provides a detailed V3 update on Brandon Herrera's AK-50 project, a custom rifle chambered in .50 BMG. Key design changes include a hinged piston inspired by the PKM, a helical bolt lockup for improved reliability, and a unique dust cover system to maintain optic zero. The project is seeking machine shop assistance for prototype fabrication.

This video showcases an extensive and rare collection of Combloc firearms and custom builds by M13 Industries in Las Vegas. Lead gunsmith Aiden and owner John Houlton detail various AK variants, unique Eastern Bloc designs like the VZ58 and VZ61 Scorpion, and custom projects including short-barreled PSLs and AK-102s. The expertise of M13 Industries in complex re-welds, custom fabrication, and handling rare transferable machine guns is evident throughout the presentation.

This August 2020 update for the AK-50 project showcases a massive, custom-designed rear trunnion built for the .50 BMG caliber. The design incorporates a floating trunnion system with an aggressive buffer to manage recoil, especially from hot loads or suppressed fire. The project remains self-funded, with the next steps focusing on the bolt carrier assembly and riveting the trunnions into the planned stamped receiver.

This TFB TV episode explores a renowned gun shop in Erbil, Kurdistan, Iraq, run by gunsmith Bakhtiar. The shop showcases a diverse collection of historical firearms, including Enfield and Mauser rifles, various machine guns like PKMs and MG3s, and submachine guns such as the Egyptian Port Said. It also features rare pistols like the Tariq and other unique pieces, highlighting Bakhtiar's extensive repair and customization skills.

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.