The HK416 and its civilian counterpart, the MR556A1, represent the pinnacle of modern, piston-driven AR-platform engineering. Renowned for exceptional reliability, durability, and performance under the most adverse conditions, the HK system has become a standard for military and law enforcement agencies globally. This 14.5″ upper receiver parts kit offers a premium foundation for builders looking to assemble a top-tier tactical or duty-grade firearm.
Key Features of this Kit
- Legendary Reliability:Â The signature HK gas piston system ensures consistent cycling and minimizes maintenance requirements.
- Cold Hammer-Forged Barrel: Built to HK’s exacting standards, the barrel offers superior accuracy and a significantly longer service life compared to standard rifle barrels.
- Tactical Versatility:Â The 14.5″ barrel length is widely considered the ideal compromise for modern carbines, offering excellent balance and weight reduction without sacrificing significant terminal velocity.
- Authentic HK Components:Â Utilizing factory parts ensures seamless compatibility, superior fitment, and the long-term structural integrity expected from Heckler & Koch.
Technical Specifications
| Feature |
Specification Details
|
|---|---|
| Manufacturer | Heckler & Koch (HK) |
| Platform | HK416 / MR556A1 |
| Operating System | Short-stroke Gas Piston |
| Barrel Length | 14.5″ |
| Caliber | 5.56x45mm NATO |
| Component Type | Upper Receiver Parts Kit |
| Intended Use | High-end Custom Builds, Professional Duty Configuration |
