TYPE: RIFLE: SEMI AUTOMATIC
MODEL SERIES: MR556
CALIBER/GAUGE: 5.56 NATO
CAPACITY: 30+1
BARREL LENGTH: 16.5 IN.
MINIMUM/OVERALL LENGTH: 37.68 IN.

Product Details:
Safety: Manual Safety
Frame Finish: Black
Weight: 8.6 lbs.
Firearm Stock: Black Synthetic Adjustable
Features: M-LOK Handguard
Finish: Black
Magazine Count: 1.000
Operating System: Gas Piston
Firing System: Internal Hammer
Scope Base: Picatinny Rail
Trigger: 2-Stage
Magazine Type: Double Stack Magazine
Barrel Configuration: Single
Barrel Description: Cold Hammer-forged
Muzzle: Flash Hider
Threaded Barrel: Yes
Rifled Barrel: Yes
Forend Rail: Free Float 4 Quadrant Rail

Product Description:
A direct descendent of the HK416, the MR556A1 is a semi-automatic rifle developed by Heckler & Koch as a premium level commercial/civilian firearm with match rifle capability. Like the HK416, the MR556A1 is a major product improvement over conventional AR-type carbines and rifles. The MR556A1 uses the HK proprietary gas piston operating system, employing a piston and a solid operating ''pusher'' rod in place of the gas tube normally found in AR15/M16/M4-style firearms.

This method of operation virtually eliminates malfunctions that are common to direct impingement gas systems since hot carbon fouling and waste gases do not enter the receiver area. This is the same key feature critical to the success of the HK416 rifles used by leading military and law enforcement customers. The MR556A1 is manufactured in the USA using American and German made components. The MR556A1 uses many of the same assemblies and accessories originally developed for the HK416.