Heckler & Koch Inc 223/5.56 Rifle Deals (1 deals total)
- Heckler & Koch Inc
Filter Heckler & Koch Inc 223/5.56 Rifle Deals
25 months ago
The MR556A1 uses the HK proprietary gas piston operating system, employing a piston and a solid operating "pusher" rod which virtually eliminates malfunctions common to direct impingement gas systems since hot carbon fouling and waste gases do not enter the receiver area. The HK Modular Rail System (MRS) is truly free-floating for maximum accuracy. The MRS handguard has a more ergonomic design, yet retains many features from the previous FFRS. It uses an HK proprietary keyhole design to allow the attachment of Picatinny rail segments to the handguard.