Overview
The MR556 A4 11" SBR is out of stock. We have one MR556 A4 11" pistol in stock now (police demo, fired only a few times): see the HK MR556 A4 11" police demo.
Heckler & Koch MR556 A4 11" SBR 5.56 NATO – 81001048
The Heckler & Koch MR556 A4 11" SBR is a compact, premium 5.56 NATO rifle built around HK’s proven short-stroke gas-piston system. Designed for exceptional reliability, cleaner operation and improved control, the MR556 A4 features an adjustable gas regulator for suppressed or unsuppressed use, fully ambidextrous controls and a free-floating M-LOK handguard.
Its 11-inch barrel and adjustable stock make it highly maneuverable in confined environments while maintaining the durability, accuracy and build quality expected from Heckler & Koch.
Key Features
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Chambered in 5.56x45mm NATO
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11-inch barrel with 1:7 twist
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HK short-stroke gas-piston operating system
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Adjustable gas regulator
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Suppressor-ready design
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Fully ambidextrous controls
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Free-floating M-LOK handguard
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Full-length Picatinny top rail
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Adjustable HK-style stock
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Includes one 30-round magazine
Specifications
Manufacturer: Heckler & Koch
Model: MR556 A4 SBR
MPN: 81001048
UPC: 642230274112
Caliber: 5.56x45mm NATO
Action: Semi-Automatic
Operating System: Short-Stroke Gas Piston
Barrel Length: 11"
Barrel Twist: 1:7"
Capacity: 30 Rounds
Overall Length: 27.9"–31.7"
Weight: 7.67 lbs.
Handguard: Free-Floating M-LOK
Finish: Black
Classification: NFA Short-Barreled Rifle
