About the Heckler & Koch MR 556A1 Rifle 5.56mm Black 16.1" ~The Heckler & Koch MR 556A1 Rifle uses the HK proprietary gas piston operating system, employing a piston and a solid operating "pusher" rod in place of the gas tub normally found in AR-15, M16, and M4-style firearms. This virtually eliminates malfunctions that are common to direct impingement gas systems since hot carbon fouling and waste gases do not enter the reciever area. The HK Free Floating Rail System (FFRS) handgaurd has four MIL-STD-1913 Picatinny rails and allows all current accessories, sights, lights and aimers used on the M4 and 16 type arms to be fitted to the MR series. A precise enhanced two-stage trigger adds significantly to the accuracy of the MR556A1 and an extended latch charging handle makes operating the rifle with a telescopic sight easier. The retractable buttstock can be locked into a solid, non-moving position by tightening an Allen screw in the bottom of the stock.
The MR 556A1 Rifle offers:
- Gas pistol operating system
- Free Floating Rail System handgaurd
- Barrel has an internal profile of 6 lands and grooves
- Precise enhanced two-stage trigger
- C.I.P. dimensioned chamber
- Picatinny rail machined into the top of upper reciever
- Produced in the USA using American and German made components
- Model: MR556A1
- Caliber: 5.56mm
- Capacity: 30
- Barrel Length: 16.5"
- Weight: 8.60 lbs
We go the extra mile.
Our Green Top Pros dont just sell the gear in our store but they use it every day. Along with unmatched expertise, here are a few perks you'll enjoy as a Green Top customer.
- 5.56 Nato
- CP Category:
- Requires FFL: