Systema OBREGON: The Mexican Rotating-Barrel 1911

This guide details the disassembly of the B&T MP9/TP9, originating from the Steyr TMP. It covers separating the upper and lower receivers, removing the bolt carrier, and extracting the rotating barrel. The process highlights the firearm's unique short-recoil, rotating barrel action with 8 locking lugs and the cam groove mechanism. The information is presented with high authority by Ian McCollum, a recognized firearms historian.

Ian McCollum, a recognized firearms historian, details the unique field stripping process for the Glock 46. This model features a rotating barrel and a specialized disassembly lever that requires the striker to be disconnected without pulling the trigger, a key requirement for German police trials. The video demonstrates the internal mechanics and external features, highlighting its departure from traditional Glock designs.

This guide details the unique disassembly process for the Glock 46, a model developed with specific German police requirements. Unlike standard Glocks, it features a rotating barrel and a specialized trigger and disassembly mechanism that avoids the need to pull the trigger for field stripping. The information is presented with high authority from an industry trade show.

This guide details the unique 'Nutcracker' disassembly of the prototype 9x19mm vz.38 pistol, as demonstrated by Ian McCollum. The process involves hinging the slide and barrel assembly upwards from the frame, revealing the complex rotating barrel locking system. This experimental Czech pistol, designed by František Myška, featured a DA/SA trigger and manual safety, differentiating it from the standard military model.

This entry details the unique locked breech, rotating barrel mechanism of the rare Prototype vz.38 'Nutcracker' pistol in 9x19mm. Expert Ian McCollum explains its departure from standard blowback designs, highlighting the helical cam grooves and locking lug system responsible for barrel rotation during cycling. The guide focuses on understanding these internal mechanics, crucial for gunsmiths and advanced firearm enthusiasts interested in historical experimental designs.

This guide details the disassembly and comparison of the rare 9x19mm Mauser HSc locked-breech prototype, as presented by Ian McCollum of Forgotten Weapons. It highlights the design evolution from Josef Nickl's patent, the mechanical differences from the standard HSc, and the reasons for its failure to secure military contracts. The content is highly technical, suitable for advanced enthusiasts interested in firearm design history.

This guide details the specific technique for separating two MAS-36 rifles that have been inadvertently locked together by their bayonets. It outlines the historical context of this issue, the modification made to the bayonet to resolve it, and the step-by-step procedure for disengagement. The technique requires precise alignment and the use of a pointed tool to access the internal release mechanism, as demonstrated by firearms expert Ian McCollum.

This guide details the loading and firing procedure for the M134 Minigun, as explained by Ian McCollum. It covers manual indexing of the barrel cluster, feeding the ammunition belt, engaging controls, and firing. The guide also touches upon the weapon's spin-down inertia and the function of modern clutch systems. Expert instruction from a recognized firearms historian highlights the technical aspects of operating this powerful weapon system.

This guide details the operational features of the H&K G11 K2, a prototype assault rifle known for its caseless ammunition and unique rotating drum bolt. It covers the selector settings, magazine capacity, integrated optics, and the internal action designed for recoil management during high-rate-of-fire bursts. Expert insights from Ian McCollum highlight the historical context and technical innovations of this advanced firearm.

This guide details the operation of the German L.Gr.W.36 50mm light mortar, as demonstrated by expert Ian McCollum. It covers assembly, leveling procedures, ammunition handling, and live fire execution, emphasizing the difficulty in visually tracking the projectile. The instruction highlights the importance of proper setup for accuracy.