Heckler & Koch MR556A1 Gas Piston 5.56 NATO Blue/Black Rifle

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. By keeping hot combustion gases and carbon fouling out of the receiver, the piston system supports clean, reliable operation. Its German-made cold hammer forged barrel measures 16.5 inches, uses a 1:7 twist, and features a heavy contour with an unlined bore for accuracy. A two-stage trigger, secure takedown pins, extended charging handle, adjustable stock, and full-length optic rail give the MR556A1 the capability and handling expected of a precision-oriented modern sporting rifle. This package also includes the MR Explorer Case and a 30-round magazine.

Key Features

• Short-stroke gas piston system helps reduce fouling in the receiver and supports reliable cycling
• 16.5-inch heavy-contour cold hammer forged barrel with a 1:7 twist for stable bullet performance
• 5.56 NATO chamber also accommodates quality .223 Remington ammunition
• Enhanced two-stage trigger supports a controlled, precise trigger press
• Adjustable stock allows the rifle to be configured for different shooters and equipment
• Full-length top rail provides a solid mounting interface for an optic or other aiming accessory

The HK MR556A1 combines piston-driven reliability with precision-focused features for serious range, training, and sporting use.