SKU: HK51000385
UPC: 642230270220
MPN: 51000385
The HK Upper MR556A4 5.56 11" Black is a premium upper receiver from Heckler & Koch, designed for serious firearm enthusiasts, military professionals, and law enforcement agencies. Engineered for performance and reliability, this upper receiver is perfect for those looking to upgrade their AR-15 platform. It offers exceptional accuracy and versatility, making it a valuable addition to any tactical or sporting setup.
Featuring an 11" barrel threaded at 1/2x28, this upper receiver is optimized for a variety of muzzle devices. The M-LOK handguard allows for easy attachment of accessories, enhancing the overall functionality of your firearm. Constructed from high-quality materials with an anodized finish, the HK Upper MR556A4 ensures durability and resistance to corrosion, making it suitable for rigorous use in the field or at the range.
The HK Upper MR556A4 is compatible with AR-15 lower receivers, providing a seamless fit for those looking to customize their firearms. Benefiting from Heckler & Koch's renowned engineering and attention to detail, this upper receiver is ideal for competitive shooters, tactical operators, and anyone seeking a reliable, high-performance upper assembly. With its included bolt carrier group, charging handle, buffer weight, and buffer spring, this product is ready to enhance your shooting experience out of the box.
WARNING ⚠️ You must be 18 or older to purchase shotgun or rifle ammunition and 21 or older to purchase handgun ammunition and firearms. Please reference our requirements for ammunition orders to "restricted" states HERE. Always make sure you use the correct ammunition for your firearms. Ammo cannot be shipped to a PO Box. Please reference state & local laws before making a firearm or ammunition purchase.
