Hk Mr556 A4 556nato 16.5" 10rd Blk

The Heckler & Koch MR556 A4 556NATO 16.5" 10rd semi-automatic rifle represents a civilian-legal platform built on proven military engineering. Designed for shooters seeking a direct-impingement rifle with established reliability and accuracy, the MR556 A4 delivers the ergonomic and modularity benefits that made the HK416 system a standard across law enforcement and military units worldwide. This rifle suits trained civilians, competitive shooters, and those prioritizing a battle-tested design for duty or sport use.

The MR556 A4 features a 16.5-inch barrel optimized for 5.56 NATO ballistics, delivering velocity and accuracy suitable for intermediate-range engagements while maintaining controllability in tactical environments. The rifle employs a direct-impingement operating system paired with a free-floating barrel, minimizing vibration and improving precision shot-to-shot consistency. The A4 configuration includes Picatinny rail sections for optics, accessories, and backup iron sights, enabling operators to customize their platform for specific missions. The 10-round magazine capacity complies with current federal and state regulations while maintaining the rifle's handling characteristics and reload speed.

Law enforcement training units, competitive 3-gun participants, and responsible armed citizens benefit from the MR556 A4's accuracy and modularity. The rifle's HK pedigree ensures component commonality with existing 5.56 NATO platforms and aftermarket support. Installation of optics, lights, and rail-mounted accessories is straightforward via standard Picatinny systems; no gunsmithing required. The rifle comes calibrated for use with standard 5.56 NATO and .223 Remington ammunition, making it practical for both training and duty use. Always verify local and state firearms regulations before purchase and follow all applicable federal licensing requirements.