HK MR556 for sale
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HK MR556 A1 5.56/.223, 16.5" Medium Contour Barrel, M-LOK, Black, 30rd
Brand:
HK
Action:
Semi-Auto
Barrel Length:
16.5in
Caliber:
5.56×45mm NATO
Capacity:
30+1
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:
16.5in
Caliber:
5.56×45mm NATO
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
(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
Barrel Length:
16.5"
Caliber:
5.56×45mm NATO
(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+1
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
Marketplace Insights
★ 3.8/5
based on 4 customer reviews across 7 variants from 22 retailers
Mixed reviews highlight excellent rifle quality and service, but some customers experienced condition and accessory concerns with their purchases.
What customers like
High Quality Product75%
Very high quality rifle that is the personal weapon of a SEAL friend.
Good Customer Service50%
Service was easy and quick.
Excellent Performance25%
HK MR556A1 is the real deal hands down.
Common concerns
Condition Issues25%
Rifle was not new. -Bag had broken strap. -Handguard was marred.
Accessories Mismatch25%
it came with a Magpul magazine and hand grip instead of HK parts.
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. Prices across our 22 retailers range mostly $1,859 to $3,499, with 7 variants tracked and 3 currently in stock. 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.