Heckler & Koch MR556A1 Gas Piston 5.56 NATO Blue/Black Rifle
Caliber: 5.56 NATO · Capacity: 30+1
Specifications
Action Semi-Automatic
Finish Blue/Black
Sights Standard Sights
Weight 8.6 pounds
Capacity 30+1
Grip Safety No
Optic Ready Yes
Barrel Length 16.5 inches
Manual Safety Yes
Overall Length 32.5 inches
Trigger Safety No
Caliber / Gauge 5.56 NATO
Threaded Barrel Yes
Magazines Included 1
Ambidextrous Safety Yes
WARNING: This product can expose you to chemicals including arsenic, which is known to the State of California to cause cancer. For more information, go to WWW.P65WARNINGS.CA.GOV
Description
Product Overview
The Heckler & Koch MR556A1 is a premium semi-automatic rifle derived from the HK416 and built around HK's short-stroke gas piston operating system. This design keeps hot propellant gases and carbon fouling out of the receiver, supporting dependable operation during extended use. Its German-made, cold hammer forged 16.5-inch heavy-contour barrel features a 1-in-7-inch twist and an unlined bore designed for accuracy. The rifle also includes an enhanced two-stage trigger, adjustable synthetic stock, ambidextrous manual safety, and an optic-ready rail system. Chambered in 5.56 NATO, it also accommodates most quality .223 Remington ammunition.
Key Features
- Short-stroke gas piston system helps reduce carbon fouling in the receiver
- Cold hammer forged 16.5-inch heavy-contour barrel supports accuracy and long service life
- Enhanced two-stage trigger provides a precise, predictable trigger pull
- Adjustable synthetic retractable stock accommodates different shooting positions
- Ambidextrous manual safety supports left- and right-handed operation
- Optic-ready rail system allows installation of a compatible red dot sight or scope
The MR556A1 combines HK416-derived piston operation, durable construction, and match-oriented accuracy in a versatile 5.56 NATO rifle.
4.9 | 17 Reviews
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- SKU:
- MR556A1
- UPC:
- 642230246454
- BUDS ID:
- 69886
Compatible Ammo
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Customer Reviews
4.9 out of 5
17 total reviews
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Latest Reviews
Frank B.
4 years ago
Verified Purchaser
One of the best and...
One of the best and most reliable 5.56 that I have ever shot. It may weigh more than the AR, but far superior. H&K by far makes the best rifles.
Glenn A.
4 years ago
Verified Purchaser
Too bad they don't...
Too bad they don't have user profiles here. But anyway 30+yr gun collector and 12+yr Buds and Team Buds customer. One of my favorite brands is HK I own just about every gun they sold since the 80's I own pre-ban Mp5's and G3's. Also G36, TG36, MR762, SP89, SP94,SP5,SP5K and most handguns again since the 80's my most recent HK pistol was a .45 tactical compact. I have 2 MR556's one is a MR556 416 clone built from a 416 parts kit the other I keep NIB for my collection, only HK guns I do not own is the UMP which I dislike and the MP7 which I love. Lets face it HK products are pretty expensive as are spare parts, also many parts are proprietary so be aware of this when buying any HK firearm. From the one I do shoot its has the best fit and finish of any AR in my collection (DD,LWRC, SIG or Colt etc) and its also the smoothest shooting out of all my AR's. Its heavier than your standard DI gun but the weight helps if your shooting for groups or accuracy etc. I shoot everything from steel to match ammo thru this gun and it eats everything no problem runs suppressed fine even though it has a self regulating gas piston system. It fits standard STANAG mags, hang grips and stocks but hand guards are proprietary if I am not mistaken. The one thing I like about this gun is that you can put the gun on safe even with the hammer down. So if you want a premium German made piston AR I highly recommend it. Some always ask if its worth the $3k+ I always say price or worth is subject to the individual. For me yes its worth it as you are NOT just paying for the name and that goes for every HK firearm nothing really compares.
Steve D.
6 years ago
Verified Purchaser
Loved it been wanting...
Loved it been wanting one for years now.
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Retail Availability
Bud's Gun Shop - Lexington, KY
1105 Industry Road, Lexington, KY 40505
Bud's Gun Shop - Sevierville, TN
2270 Two Rivers Blvd, Sevierville, TN 37876
Uncle Lee's - Greenville, KY
820 Main St, Greenville, KY 42345
