HK MR556 for sale
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HK MR556 A4 5.56mm 16.5" 1/2"x28 Bbl Semi-Auto Rifle w/(1) 30rd Mag 81000827
Action:
Semi-Auto
Barrel Length:
16.5"
Caliber:
5.56×45mm NATO
Capacity:
30
Finish Per Color:
Black
(0)
HK MR556 A4 11" 5.56 NATO, Pistol, Black - 81001050
Brand:
H&K
Action:
Semi-Auto
Barrel Length:
11"
Caliber:
5.56×45mm NATO
Capacity:
30
Finish Per Color:
Black
(0)
HK MR556 A4 5.56mm Semi-Auto 11" 1x2"x28 Bbl Black Pistol w/(1) 10rd Mag 81001051
Action:
Semi-Auto
Barrel Length:
11"
Caliber:
5.56×45mm NATO
Capacity:
10
Finish Per Color:
Black
(0)
HK MR556 A4 5.56mm 16.5" 1/2"x28 Bbl Semi-Auto Rifle w/(1) 10rd Mag 81000828
Brand:
Heckler and Koch
Action:
Semi-Auto
Barrel Length:
16.5"
Caliber:
5.56×45mm NATO
Capacity:
10
Finish Per Color:
Black
(4)
HK MR556 A1 5.56/.223, 16.5" Medium Contour Barrel, M-LOK, Black, 30rd
Brand:
HK
Action:
Semi-Auto
Barrel Length:
16.5"
Caliber:
5.56×45mm NATO
Capacity:
30
Finish Per Color:
Black
(0)
HK MR556 A4 16.5" 5.56x45mm Ambi Rifle, Patriot Brown - 180689
Brand:
H&K
Action:
Semi-Auto
Barrel Length:
16.5"
Caliber:
5.56×45mm NATO
Capacity:
30
Finish Per Color:
Brown
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Heckler and Koch MR556 Flecktarn Camo 5.56 / .223 Rem 16.5" Barrel 30-Rounds
Action:
Semi-Auto
Barrel Length:
16.5"
Caliber:
.223 Rem/5.56×45mm NATO
Capacity:
30
Finish Per Color:
Camo
(0)
Heckler & Koch MR556A1 5.56mm 16.5" M-LOK 10rd - Factory California Compliant
Brand:
Heckler and Koch
Action:
Semi-Auto
Barrel Length:
16"
Caliber:
5.56×45mm NATO
Capacity:
10
Finish Per Color:
Black
(0)
HK MR556 5.56mm Semi-Auto 16.5" Barrel M-LOK Rifle w/(1) 10rd Mag 81000580
Action:
Semi-Auto
Barrel Length:
16.5"
Caliber:
5.56×45mm NATO
Capacity:
10
Finish Per Color:
Black
(0)
Heckler and Koch MR556 Tropentarn Camo 5.56 / .223 Rem 16.5" Barrel 30-Rounds
Action:
Semi-Auto
Barrel Length:
16.5"
Caliber:
.223 Rem/5.56×45mm NATO
Capacity:
30
Finish Per Color:
Camo
(0)
MR556A1 UPC: 642230268456
Brand:
Heckler and Koch
Action:
Semi-Auto
Barrel Length:
16.5"
Caliber:
5.56×45mm NATO
Capacity:
10
(0)
HK MR556A1 5.56mm 16.5in 30rd Semi-Automatic Rifle (81000459)
Brand:
HK
Action:
Semi-Auto
Barrel Length:
16.5"
Caliber:
5.56×45mm NATO
Capacity:
30
Rounds:
30
(0)
HK MR556, Competition Model, 5.56mm 16.5" barrel 10rd mag
Brand:
HK
Barrel Length:
16.5"
Caliber:
5.56×45mm NATO
Capacity:
10
(0)
HK MR556 Carbine Semi-Auto Rifle in FDE
Brand:
HK
Action:
Semi-Auto
Barrel Length:
16.5"
Caliber:
5.56×45mm NATO
Finish Per Color:
Flat Dark Earth
(0)
HK MR556 A4 11" 5.56 NATO Pistol, Patriot Brown 81001202
Brand:
Heckler and Koch
Action:
Semi-Auto
Barrel Length:
11"
Caliber:
5.56×45mm NATO
Capacity:
10
Finish Per Color:
Brown
(0)
HK MR556 556NATO 17.5" BLK 10RD CA
Brand:
Heckler and Koch
Action:
Semi-Auto
Barrel Length:
16.5"
Caliber:
.223 Rem
Capacity:
10
Finish Per Color:
Black
(0)
HK Mr556 556Nato 16.5" BLK 10Rd CA 81000463
Brand:
Heckler and Koch
Barrel Length:
16.5"
Caliber:
5.56×45mm NATO
Capacity:
10
Finish Per Color:
Black
(0)
HK MR556 556NATO 16.5" 10RD MLOK CA 81000536
Brand:
Heckler and Koch
Barrel Length:
16.5"
Caliber:
.223 Rem
Capacity:
10
Finish Per Color:
Black
(0)
HK MR556 556NATO 16.5" 10RD MLOK BLK
Brand:
Heckler and Koch
Action:
Semi-Auto
Barrel Length:
16.5"
Caliber:
.223 Rem
Capacity:
10
Finish Per Color:
Black
(0)
HK MR556 5.56 16.5 MLOK UPPER RECEIVER KIT
Brand:
HK
Barrel Length:
16.5"
Caliber:
.223 Rem
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Heckler and Koch MR556A1 Flat Dark Earth 5.56 NATO / .223 Rem 16.5" Barrel 30-Rounds
Brand:
Heckler and Koch
Action:
Semi-Auto
Barrel Length:
16.5"
Caliber:
5.56×45mm NATO
Capacity:
30
Finish Per Color:
Flat Dark Earth
(0)
Heckler & Koch MR556FM 5.56 16.5" 10RD MR556FM-A1
Brand:
Heckler and Koch
Barrel Length:
16.5"
Caliber:
5.56×45mm NATO
Capacity:
10
Finish Per Color:
Black
(0)
Heckler & Koch MR556A1 MLok 1-30Rd Mag
Brand:
HK
Action:
Semi-Auto
Barrel Length:
16.5"
Caliber:
.223 Rem
Capacity:
30
Finish Per Color:
Black
(0)
HECKLER & KOCH MR556 A4 PATRIOT BROWN
Brand:
Heckler and Koch
Action:
Semi-Auto
Finish Per Color:
Brown
Frequently Asked Questions
HK MR556 for sale
Why is HK MR556 so expensive?
HK's MR556 is expensive due to its cold hammer-forged barrel, short-stroke piston system, and ambidextrous controls—all manufactured in Germany with tight tolerances. Limited production volumes and HK's rigorous quality standards add further cost. It typically sells for around $3,199 on our marketplace.
How much is a HK MR556 A4?
HK MR556 A4 rifles typically sell for around $3,199 on our marketplace. MSRP sits $3,499–$3,999.
Is the MR556 the same as the 416?
No. The MR556 is the semi-automatic civilian version of HK's 416. Both share the piston-driven operating system and cold hammer-forged barrel, but the 416 is select-fire while the MR556 is semi-automatic only. Related designs, not identical rifles.
Where is the MR556 A4 made?
Heckler & Koch manufactures the MR556 A4 in Germany. The upper and lower receivers are cast there, and the cold hammer-forged barrel blanks originate in Germany, though final barrel finishing occurs in the United States.
