HK MR556 A4 for Sale
Browse HK MR556 A4 listings from verified sellers across the U.S. on GunsAmerica.
Quick Look
The HK MR556 A4 is a semi-automatic rifle derived from the renowned HK416 platform, developed by Heckler & Koch. Designed for reliability and modularity, it offers users high performance in various tactical and sporting roles. It enjoys strong popularity among enthusiasts seeking a durable AR-style rifle with precision engineering.
Why It's a Top Choice
- Proven HK short-stroke piston system for enhanced reliability
- Modular design allows customization with accessories
- High-quality construction ensures long-term durability
- Precision accuracy suitable for tactical and competition use
- Compatible with standard AR-15 magazines
Key Variants
HK MR556A2
A versatile model balancing barrel length and weight for general purpose use.
HK MR556A1
Ideal for users seeking a compact rifle option without sacrificing reliability.
Competitor Comparison Table
| Feature | Hk Mr556 A4 | Colt M4 | Daniel Defense DDM4 |
|---|---|---|---|
| MSRP | $2,500+ | $1,200+ | $1,800+ |
| Capacity/Size | 30 rounds / 16\" barrel | 30 rounds / 14.5-16\" barrel | 30 rounds / 16\" barrel |
| Weight | 7.9 lbs | 6.5-7 lbs | 7.0 lbs |
| Optics-Ready | Yes, Picatinny rail | Yes, various rail options | Yes, integral rail |
| Trigger Type | Single-stage | Single- or two-stage | Single-stage |
| Notable Pro | Reliable piston system | Proven service record | High-quality barrel |
| Notable Con | Higher price point | Direct impingement system | Weight above average |
Best Use Cases
- Tactical and law enforcement duty
- Competition shooting
- Home and self-defense
- Range training and practice
- Collection and military enthusiasts
FAQs
Can I use standard AR-15 magazines with the HK MR556 A4?
Yes, the HK MR556 A4 is compatible with standard AR-15 magazines chambered in 5.56 NATO.
What trigger type does the HK MR556 A4 feature?
It uses a single-stage trigger designed for a crisp and consistent pull suitable for tactical use.
How does the HK MR556 A4 differ from the Colt M4?
The MR556 A4 uses a short-stroke gas piston system, offering increased reliability over the Colt M4's direct impingement system.
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