H&K MR762 A4 Upper Receiver Kit 7.62x51mm 16″

The Heckler & Koch MR762 A4 Upper Receiver Kit is configured for the 7.62x51mm chambering and features a 16" cold hammer-forged steel barrel. The kit includes a bolt and buffer and is finished in matte black with an M-LOK handguard for accessory mounting. Intended for precision, duty, and heavy-range applications, it provides durable construction for demanding use.

Key Specifications

• The caliber is 7.62x51mm.
• The barrel measures 16".
• The barrel material is Cold Hammer Forged Steel.
• The rate of twist is 1-in-7".
• The finish is Matte Black.
• The additional feature includes a M-Lok Handguard.
• The kit Includes Bolt and Buffer.
• The product type is listed as Accessory-Uppers.

Built to serve as a reliable upper for builders and armorers, the MR762 A4 upper combines a cold hammer-forged barrel and a modular M-LOK interface to support consistent performance and accessory flexibility in precision and service-focused roles.