Description
The HK MR556, 5.56mm Package 16.5″ Barrel, 1- 30rd magazineLeupold Mark 8 CQBSS 1.1 8X24mm Scope, Mounted is a premium, optics-ready rifle system. It combines Heckler & Koch’s legendary MR556 piston-driven AR platform with a high-performance Leupold Mark 8 CQBSS variable-power scope, delivering a turn-key solution for precision and reliability. This package ships to Missouri and compliant US states.
Key Features
- HK MR556 Piston-Driven Upper: Eliminates gas and carbon fouling in the receiver for cleaner, cooler, and more reliable operation.
- Leupold Mark 8 CQBSS 1.1-8x24mm Scope: Offers true 1x speed for close-quarters and dials up to 8x magnification for precise mid-range engagements.
- Factory-Mounted & Zeroed: The scope is professionally mounted, saving you time and ensuring a solid, repeatable zero right from the start.
- HK’s Proprietary Rail & Barrel: Features a cold hammer-forged, chrome-lined barrel and a robust free-floating rail system for sustained accuracy.
- Complete Package: Comes ready to run with a 30-round magazine. No gunsmithing required to get this system into the field.
Specifications & Details
| Specification | Detail |
|---|---|
| Caliber | 5.56x45mm NATO |
| Barrel Length | 16.5 inches |
| Operating System | Short-stroke gas piston |
| Optic | Leupold Mark 8 CQBSS 1.1-8x24mm |
| Magazine Capacity | 1x 30-round HK steel magazine |
| MSRP (Package) | $5193.77 |
The heart of this system is the MR556 upper, which uses the same piston operation as the military-issue HK416. This means less maintenance and more consistent function across a wider range of ammunition types. The Leupold Mark 8 is a battle-proven optic with an illuminated reticle, built to withstand hard use. The total package weight, with optic mounted, is approximately 9.8 lbs, providing a solid, stable shooting platform. It’s compatible with standard AR-15 lower receivers, though for optimal performance, pairing it with an HK MR556 lower is recommended.
Who This Package Is For
This is for the shooter who demands proven performance without the guesswork. When it comes to a rifle that must work without fail—whether for duty, serious defensive use, or high-round-count training—this package removes the variables. It’s for the individual who understands that reliability is engineered, not hoped for, and who values a system where the optic and rifle are matched from the outset. The investment reflects the quality of components and the peace of mind that comes with them.
Pros & Cons
Pros: Unmatched HK piston reliability. Exceptional Leupold glass clarity and versatility. The scope mount is robust and properly torqued. The system runs cleaner than direct-impingement ARs. It’s a complete, drop-in ready package that requires no additional sourcing or gunsmithing.
Cons: The premium price point is a significant consideration. The piston system adds some weight over a traditional AR. At this level, you’re paying for top-tier engineering and materials—but is that worth it for your needs? That said, for a mission-critical tool, the cost is justified by the performance.
Frequently Asked Questions
Q: Is the Leupold Mark 8 scope included, or is this just the rifle?
A: Yes, the Leupold Mark 8 CQBSS 1.1-8x24mm scope is included and is already mounted and zeroed on the rifle’s HK rail. This is a complete, ready-to-shoot package.
Q: Can I use my existing AR-15 magazines with the HK MR556?
A: The HK MR556 is designed to work with standard USGI AR-15 pattern magazines. The included 30-round HK magazine is of exceptional quality, but most mil-spec PMAGs and other quality magazines will function reliably. FFL transfer required for firearm purchases.
Q: What is the advantage of the piston system in the MR556?
A: The short-stroke piston keeps hot, carbon-fouled gas out of the upper receiver and bolt carrier group. This leads to a cleaner, cooler-running firearm, reduced maintenance in the field, and enhanced reliability, especially with suppressors or under adverse conditions.
This HK MR556 package represents a significant capability, available at firearms-missouri.com for Missouri residents and nationwide. If your standard is a system built for uncompromising performance, this setup is configured to meet it. Contact us to discuss availability and the transfer process.
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