This comprehensive review covers 'Vickers Guide: Heckler & Koch Volume 4: Rifles & Machine Guns,' authored by Larry Vickers, James Rupley, and James Williamson. The book delves into post-roller delayed H&K long guns, including detailed sections on the G11, G36 variants, HK416 development, SA80 upgrades, MG4/MG5 machine guns, G28 precision rifles, and grenade launchers like the AG36 and GMG. Expert Ian McCollum highlights the book's high-quality photography and technical depth, making it an invaluable reference for firearms enthusiasts and historians.
The H&K MG4 is a 5.56mm light machine gun adopted by Germany, Spain, and Portugal. It features an open-bolt, rotating bolt, and gas-piston operation with a quick-change barrel system that allows removal regardless of bolt position. The fire control is limited to safe and full-auto, and it utilizes a proven belt-feed mechanism derived from older H&K designs.
The HK 421 is a new, lighter, and more compact machine gun based on the MG5, weighing approximately 8kg due to a stamped receiver. It retains the MG5's quick-change barrel and features FN mounting points to compete with the FN Minimi in squad automatic roles. This .308 caliber weapon aims to offer a lighter alternative for infantry.
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