How Does It Work: Roller Locking

Roller locking is a fully locked firearm action, distinct from roller-delayed blowback. It functions by rollers resting against a central block, forcing them outward to lock the barrel assembly. Unlike roller-delayed systems, roller locking requires an external force, like short recoil, to unlock. This mechanism is exemplified in firearms such as the CZ 52 pistol and the MG42 machine gun.

This video presents a challenge from Forgotten Weapons, where the expert instructor is unable to disassemble a Madsen 1945 pistol. He outlines common disassembly methods for other firearms like the Colt 1903 and Ruby pistols, noting the Madsen's barrel knurling suggests a rotational release. However, the only visible mechanism, a spring plunger, only locks the slide partially open, leaving the full disassembly process a mystery.

This guide details the field stripping process for the Italian TZ-45 SMG, as demonstrated by Forgotten Weapons. Key components like the stamped receiver pieces, charging handle, and their functional interactions, including dust cover capability, are explained. The process emphasizes understanding how the front sling swivel and muzzle nut secure the receiver components.

This YouTube video, titled 'How Does it Work: Stoner's AR System,' delves into the mechanics of Eugene Stoner's iconic rifle system. Leveraging the description's hashtags, the content likely focuses on the operational principles of the AR platform, specifically its gas system. The video is expected to provide an in-depth explanation of how this influential design functions, catering to firearm enthusiasts interested in the technical aspects of the AR-15.

This video delves into the mechanics of the lever-delayed blowback operating system, a less common but effective firearm mechanism. Drawing from the 'Forgotten Weapons' channel, it likely explores the historical context and technical aspects of this design, potentially featuring examples from firearms that utilize it. The description indicates a focus on the 'how it works' aspect of this specific operating system, with the FAMAS rifle being a notable example of a firearm that employs a similar principle, though the video may cover others.

This expert-level guide details the disassembly of the rare Terni Model 1921, presented by Ian McCollum of Forgotten Weapons. The process involves removing the buttstock and trigger guard, analyzing the trigger mechanism including the disconnector, and detaching the front end assembly with its unique monopod and bayonet mount. The video highlights the firearm's simple internal structure and points out a missing component for full-auto functionality.

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.