The HK MR556A1 is a premium semi-automatic modern sporting rifle designed for civilian shooters who demand superior performance. A direct descendant of the renowned HK416, this rifle features HK’s proprietary gas piston operating system, eliminating common malfunctions associated with direct impingement systems by preventing carbon fouling and waste gases from entering the receiver. The German-engineered cold hammer-forged barrel provides exceptional accuracy and durability, while the unchromed steel construction ensures a long service life. The modular, free-floating HK Modular Rail System (MRS) enhances accuracy and ergonomics, with keyhole attachment points for customizing with Picatinny rail segments. The upper receiver’s integrated Picatinny rail allows easy optics and sight mounting, and the rifle is supplied with a 9-inch handguard, Troy Microsights, and a 30-round magazine. Manufactured in the USA using a blend of American and German components, the MR556A1 sets the standard for precision and reliability.
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| Centerfire/Rimfire | |
| Left Handed | |
| Optics Ready |