```html
Heckler & Koch MR556 A4 5.56 NATO 16.5" M-LOK Rifle 10-Round | 81000828Premium HK416-Based AR-15 with Ambidextrous Controls and 10-Round Magazine
The Heckler & Koch MR556 A4 (Model 81000828) is a high-end, semi-automatic rifle built on the legendary HK416 platform. Chambered in 5.56 NATO / .223 Remington, this premium AR features a 16.5-inch barrel, an M-LOK free-float handguard, an adjustable gas block, and full ambidextrous controls. This specific configuration includes a 10-round magazine, making it an excellent choice for shooters in states with magazine capacity restrictions while still delivering the exceptional quality and performance that Heckler & Koch is known for.
Key Features & Benefits
- HK416 Platform: Built on the proven HK416 short-stroke gas piston operating system for exceptional reliability and durability.
- 16.5" Barrel: Precision barrel delivers excellent accuracy, velocity, and a balanced overall length for versatile use.
- M-LOK Free Float Handguard: Lightweight, modular handguard allows for easy attachment of accessories while improving accuracy by eliminating pressure on the barrel.
- Adjustable Gas Block: User-adjustable gas system allows fine-tuning for optimal performance with various ammunition types and suppressors.
- Ambidextrous Controls: Features ambidextrous safety selector, magazine release, and bolt catch for left and right-handed shooters.
- HK USA Enhanced Grip: Ergonomic grip designed for improved control and comfort during extended shooting sessions.
- HK416 Six-Position Stock: Adjustable stock provides a customizable length of pull for different shooters and shooting positions.
- 10-Round Magazine: Includes one 10-round magazine, ideal for compliance with state magazine capacity laws.
- Anodized Black Finish: Durable anodized finish provides excellent corrosion resistance and a professional appearance.
Technical Specifications
| Manufacturer | Heckler & Koch |
|---|
| Model Number | 81000828 |
|---|
| UPC | 642230269415 |
|---|
| Caliber | 5.56 NATO / .223 Remington |
|---|
| Barrel Length | 16.5 inches |
|---|
| Handguard | M-LOK Free Float |
|---|
| Gas System | Adjustable Gas Block |
|---|
| Stock | HK416 Six-Position Adjustable |
|---|
| Controls | Ambidextrous |
|---|
| Capacity | 10 Rounds |
|---|
| Finish | Anodized Black |
|---|
| Overall Length | 33" - 36.5" (approx.) |
|---|
Why Choose the Heckler & Koch MR556 A4?
The MR556 A4 represents the pinnacle of Heckler & Koch’s AR platform development in the United States. Built with the same attention to detail and engineering excellence as the HK416 used by elite military units worldwide, this rifle offers superior reliability, accuracy, and ergonomics. The inclusion of an adjustable gas block makes it particularly well-suited for suppressed shooting, while the ambidextrous controls and enhanced grip provide a modern, user-friendly experience.
This 10-round configuration allows shooters in restrictive states to own a premium HK416-pattern rifle without modification. Whether you’re a competitive shooter, a serious enthusiast, or someone who demands the highest quality in a 5.56 NATO rifle, the MR556 A4 delivers unmatched performance and craftsmanship.
Ideal For
- Shooters in states with 10-round magazine limits
- Competitive shooting and precision rifle use
- Suppressed firearm configurations
- Professional users and serious enthusiasts
- Anyone seeking a premium, HK416-based AR-15
- Left and right-handed shooters who prefer ambidextrous controls
Experience premium German engineering with the Heckler & Koch MR556 A4 10-Round (Model 81000828, UPC 642230269415).
This feature-rich 5.56 NATO rifle combines the legendary reliability of the HK416 platform with modern enhancements like an M-LOK handguard, adjustable gas block, and full ambidextrous controls. The 10-round magazine configuration makes it compliant for a wider range of users while maintaining the exceptional quality and performance expected from Heckler & Koch.The End```
