H&K MG4: Germany's New 5.56mm Squad Machine Gun

This guide details the field stripping process for the H&K MG4, a 5.56mm light machine gun. Expert Ian McCollum demonstrates how to disassemble the weapon into its primary component groups, highlighting the removal of the buttstock, recoil spring, grip assembly, and bolt carrier group. The process involves the use of captive pins and emphasizes the stamped steel receiver construction.

This guide details the field stripping process for the HK21 light machine gun, as demonstrated by Ian McCollum on Forgotten Weapons. It covers the disassembly of major components, highlights the unique belt feed mechanism driven by the bolt carrier's cam track, and emphasizes the firearm's shared parts commonality with the H&K G3 rifle. The HK21 utilizes a roller-delayed blowback action and fires the 7.62x51mm NATO round.

This guide details the disassembly and reassembly of the Swiss LMG25 light machine gun, focusing on its unique toggle-lock action. Expert Ian McCollum demonstrates the process, highlighting the mechanical intricacies and the importance of proper handling. The guide emphasizes safety and provides steps for accessing and inspecting the barrel assembly.

This guide details the disassembly and maintenance overview of the Colt OICW Mark II LMG Prototype, focusing on its unique external piston system and quick-change barrel. It highlights key components like the pyramid-tipped gas piston and the modified bolt carrier group with 'skis' to prevent carrier tilt. The information is presented with the authority of a former Colt employee and firearms historian.

This guide details the field stripping process for the Swiss LMG-25 light machine gun, as demonstrated by Ian McCollum. It covers the removal of the barrel and bolt assembly for cleaning or maintenance. The video also highlights the unique toggle-lock action and the importance of the API system.

This guide details the field stripping process for the M1944E1/M1945 Johnson Light Machine Gun, as demonstrated by Ian McCollum. It covers barrel removal and accessing the buttstock storage. The video highlights the unique gas-assist recoil system and the monopod mechanism.

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.