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HK MR556 A1 5.56/.223, 16.5" Medium Contour Barrel, M-LOK, Black, 30rd

(4)
Caliber: 5.56×45mm NATO
Capacity: 30+1
Barrel Length: 16.5"
Finish per color: Black
Rounds: 30

Brand: HK
Model: MR556A1
Caliber: 5.56 x 45 mm
Capacity: 30
Sights: Optics Ready
Sight Radius: 14.6″
Trigger Pull: 7.64 lb
Barrel Length: 16.5″
Height: 9.45″
Width: 3.07″
Stock Extended Length: 37.68″
Stock Retracted Length: 33.90″

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.

Andrew Calkins

1 year ago

Just received my rifle from my FFL. I have been looking for the MR556 for a long time and Euro Optic had the best price and they were great to work with. I was surprised that given the premium price for this weapon that it came with a Magpul magazine and hand grip instead of HK parts.

Chris S

1 year ago

Incredible rifle; with a Leupold VX-6 1-6x a .428 with inch five shot group at 100 meters: cartridge was new Winchester brass with 23.5 gr. of AA2230 with a 52 gr. SMK and CCI BR4 primer. HK MR556A1 is the real deal hands down.✅????????

DTrac

1 year ago

Don't buy from here. Rifle was not new. -Bag had broken strap. -Handguard was marred. -Screws we're visibly beat up. I'm highly disappointed.

David K.

1 year ago

At first I was uncertain if I could buy such a high quality rifle on this site. But this is the real deal. Very high quality rifle that is the personal weapon of a SEAL friend. That’s good enough for me. Service was easy and quick. Definitely going to buy more firearms on this site!

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