The HK MR762A4 Upper Kit delivers a factory-built 7.62x51mm NATO/.308 Winchester upper receiver assembly designed for the MR762 platform.
- Type: Complete upper receiver assembly
- Caliber: 7.62x51mm NATO / .308 Winchester
- Barrel Length: 16 inches
- Barrel Type: Cold hammer-forged, chrome-lined
- Handguard: Free-floating KeyMod rail system
- Operating System: HK gas piston system
- Compatibility: MR762 lower receivers
- Includes: Upper receiver, barrel assembly, bolt carrier group, charging handle, handguard
- Use: Rifle assembly, platform upgrade, replacement upper










