HK MR556 A4 5.56mm Rifle – M-LOK, Threaded Barrel, Ambidextrous

The HK MR556 A4 rifle represents a durable 5.56x45mm platform engineered for consistent performance. Its core is a proprietary short-stroke gas piston operating system. This design prevents hot carbon fouling from entering the receiver, which directly contributes to extended operational cycles between cleanings and reduced wear on critical internal components. The result is a highly reliable firearm, particularly important for demanding training or competitive use, often sought by those requiring a **precision rifle**.

Operational Versatility and Ergonomics

• Adjustable Gas Regulator: The integrated gas regulator allows operators to optimize cycling for either suppressed or unsuppressed configurations, ensuring consistent function regardless of accessory use. This feature provides practical adaptability for various shooting conditions.
• Ambidextrous Controls: Features like the magazine release, bolt release, and safety selector are designed for ambidextrous manipulation, accommodating both right and left-handed shooters without requiring adaptation. This enhances user interface and efficient rifle handling on the **ambidextrous AR platform**.
• Robust Construction: This HK MR556 A4 rifle includes a 16.50-inch black threaded barrel, facilitating the attachment of muzzle devices. The **Patriot Brown Picatinny rail receiver** provides a stable mounting surface for optics, while the M-LOK handguard offers versatile attachment points for modern **firearm accessories**. A 6-position black synthetic stock ensures adjustable length of pull.

Designed for professional use, competitive shooting, and discerning enthusiasts, the HK MR556 A4 provides a consistent and adaptable AR platform, ideal for those seeking a robust **5.56x45mm short-stroke piston** rifle.