Heckler & Koch MR556 A4 11" SBR

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

• Chambered in 5.56x45mm NATO

• 11-inch barrel with 1:7 twist

• HK short-stroke gas-piston operating system

• Adjustable gas regulator

• Suppressor-ready design

• Fully ambidextrous controls

• Free-floating M-LOK handguard

• Full-length Picatinny top rail

• Adjustable HK-style stock

• 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

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