Heckler & Koch MR556A1 5.56mm NATO 81000069

The HK MR556A1 is a world-class semi-automatic rifle tailored for civilian users, built as a direct descendant of the renowned HK416. Featuring a 16.5-inch unchromed barrel forged through HK’s proprietary cold hammer forging process with exceptional quality steel, this firearm delivers unparalleled accuracy and longevity. Its unique gas piston operating system with a solid ‘pusher’ rod mitigates malfunctions by preventing hot carbon fouling and waste gases from entering the receiver. The included HK Modular Rail System (MRS) is free-floating, ergonomically designed, and supports Picatinny rail segment attachments for versatile customization. With a Picatinny rail machined into the upper receiver for mounting optics and mechanical sights, the MR556A1 guarantees precision and modularity. Fully interchangeable with other high-quality AR-style firearms, this model is compliant with California regulations and comes equipped with a 10-round magazine, a 9-inch MRS handguard, and Troy Microsights for enhanced performance and usability.