Colt SMG: First of the 9mm ARs

This guide details the disassembly of the Colt SMG 9mm AR, highlighting its unique blowback operation and modified AR-15 components. Expert Ian McCollum explains the internal differences from standard AR-15s, including the magazine adapter, gas deflector, and shortened dust cover, crucial for understanding its historical context and mechanical function.

This guide details the disassembly and inspection of the Colt CK-901's proprietary bolt carrier group, a critical component for its reliable function with 7.62x39mm ammunition. The video emphasizes the importance of checking the beefed-up bolt lugs and redesigned firing pin, key features developed to overcome common failure points in AR-15 conversions of this caliber. Proper cleaning and reassembly are crucial for maintaining the rifle's performance.

Ian McCollum provides an expert overview of the Sako ARG S 40, Finland's emerging service rifle. The video details its transition from AK-based platforms to the AR-15 standard, highlighting its ambidextrous controls, direct impingement system, and heavy barrel profile. McCollum's assessment emphasizes its reliability and suitability as a modern service weapon, despite a noted front-heavy balance during range testing.

This guide details the disassembly and maintenance of the Palmetto State Armory Olcan bullpup conversion. It covers the unique takedown pin mechanism, upper receiver separation, cheek riser removal, and lower receiver component lubrication. The instruction emphasizes safety and highlights compatibility with JAKL uppers, noting SBR registration requirements for barrels under 16 inches.

This guide details the reassembly process for the HK MR223 rifle, demonstrating expert handling and safe practices. It covers the step-by-step assembly of the bolt carrier group, upper and lower receiver connection, and essential function checks. The video also shows proper magazine loading with a Magpul PMAG Gen M3 and chambering a round, highlighting the rifle's functionality at an outdoor range.

This guide outlines modifications for the BRN-4 platform, focusing on building a reliable 14.5-inch general-purpose rifle. It suggests using a Geissele rail and replacing an upper receiver experiencing issues. The process involves installing a 14.5-inch chrome-lined barrel with a 10-inch handguard, emphasizing practicality over excessive handguard length. Instruction comes from an experienced firearms instructor.

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.