Used Heckler & Koch H&K MR 556 A1 Upper Receiver 5.56 NATO AR15 MR556 AR-15

Key Features

• Item Type: Rifle Upper
• Action: AR-15 Gas Piston
• Manufacturer: Heckler & Koch (H&K, HK)
• Model: MR 556 A1 Complete Upper Receiver
• Barrel Length: 16.5"
• Caliber: 5.56mm NATO
• Overall Condition: Very Good

Product Description

Heckler & Koch MR 556 A1 Complete Upper Receiver - 5.56mm NATO, 16.5" Barrel

This Heckler & Koch MR 556 A1 complete upper receiver is chambered in 5.56mm NATO and features a 16.5" barrel with an installed flash hider. The assembly is set up with a full-length top Picatinny rail and a quad-rail handguard for mounting accessories.

Includes operator's manual.

Specifications