Finland's Prototype Belt-Fed GPMG: L41 Sampo

The Negev 7 is an Israeli upgrade to the original Negev machine gun, chambered in 7.62 NATO and introduced in 2012. It features a dedicated belt-fed system, removing the box magazine option of its 5.56 predecessor. The weapon boasts a simplified, manually adjustable gas regulator with distinct 'regular' and 'adverse' settings, designed for ease of use even when hot.

The MG-3 is a modernized 7.62 NATO variant of the iconic MG-42, developed by West Germany for Cold War rearmament. Key upgrades include a spring-loaded feed cover and bolt roller for improved reliability, a modified muzzle booster, and a heavier bolt to manage the higher rate of fire. While visually similar to the MG-42, these internal changes enhance its performance and durability.

The Madsen Saetter was a Danish Cold War attempt to enter the GPMG market, designed by Eric Larsen Saetter and produced by DISA. It incorporated WWII advancements like quick-change barrels and belt-feed systems, drawing inspiration from German designs like the MG34/MG42. Despite its technical merits, including a flapper locking system and modular trigger group, it ultimately failed to gain widespread adoption due to arriving late to market, losing out to established competitors like the MG3 and FN MAG.

The PKM is presented as a highly effective and surprisingly lightweight General Purpose Machine Gun (GPMG), weighing only 16 pounds. Its design, often described as an 'upside-down AKM,' features an inverted gas system and a barrel more in line with the stock for improved control. Operating from an open bolt, it fires the powerful 7.62x54R cartridge and boasts a quick-change barrel system and a sturdy bipod.

This review compares the Czech UK vz.59 and the Yugoslav M84 PKM, both chambered in 7.62x54mmR. While similar in weight and ergonomics, the PKM demonstrates significantly better controllability in full-auto fire, allowing for a maintained sight picture, unlike the UK vz.59 which transmits more recoil. The PKM's full-auto potential is highlighted as superior, whereas the UK vz.59 is noted as potentially more pleasant in semi-automatic for civilian use.

The Yugoslav M84, a PKM variant, is highlighted as a top-tier General Purpose Machine Gun due to its efficient design, offering significant firepower with manageable weight and recoil. The review covers practical loading procedures, including feeding the belt through a closed gun or manually chambering the first round. Shooting demonstrations showcase its surprising balance and controllability in various stances, from prone to 'Rambo style' hip firing.

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.