Product Description
The HK MR762 A4 Upper Receiver Kit is a factory-built upper receiver and barrel assembly designed for the MR762/7.62 NATO platform. Built around HKs proven short-stroke piston operating system, it helps keep heat, carbon, and fouling out of the receiver for enhanced reliability and easier maintenance. This complete assembly features a 13-inch barrel with 5/8×24 muzzle threads, a free-floating handguard, and an adjustable gas block to better tune the rifle for different conditions and suppressor use.
Product Highlights
- Factory HK MR762 A4 complete upper receiver and barrel assembly for 7.62×51 NATO /.308 Winchester platforms
- Short-stroke piston system helps reduce carbon and heat in the receiver for improved reliability
- 13-inch barrel with 5/8×24 threaded muzzle for common .30-caliber muzzle devices and suppressor mounts
- Adjustable gas block and free-float M-LOK handguard for performance and accessory flexibility
- Includes bolt group assembly plus HK proprietary buffer components; ships in an HK soft case
Specs
- Brand: HK
- Model: MR762 A4 Upper Receiver Kit
- MPN: 51001919
- UPC: 642230272545
- Caliber: 7.62x51mm NATO / .308 Winchester
- Barrel Length: 13 in
- Muzzle Thread: 5/8×24
- Operating System: Gas operated, short-stroke piston
- Gas Block: Adjustable
- Handguard: Free-float, M-LOK
- Finish/Color: Black (anodized)
- Included Components (as listed by sellers): Complete upper/barrel assembly, bolt group assembly, proprietary buffer, action spring, HK soft case
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