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MR762 A4 13" Upper Receiver Kit
SKU#51001919
MR762 A4 13" Upper Receiver Kit

$3,049.00

This kit includes a complete upper receiver/barrel assembly. This kit is only compatible with a MR762 lower . This closed system virtually eliminates the malfunctions that are common in direct-impingement gas systems, since hot carbon fouling and waste gasses are not propelled into the receiver area to operate the action. This is the same key feature critical to the success of the HK417 used by elite military and law enforcement customers. Upper will ship in HK Soft case. Kit will start shipping late Q4 2025
Out of Stock
Product details

Available late Q4 2025

  • Complete MR762 A4 Upper Receiver/Barrel Assembly— HK 16 inch cold-hammer forged barrel, upper receiver with forward assist, extended convertible charging handle, HK Free Floating Rail System handguard
  • Complete MR762 Bolt Group Assembly
  • Tungsten Filled HK Proprietary Buffer
  • HK Proprietary Buffer (Action) Spring
  • Adjustable Gas Block
  •  Ships in HK Soft case.
  • NOTE: The MR762 A4 Upper Receiver Kit is not classified as a firearm and can be purchased without a Federal Firearms License ( FFL).
  • NOTE: Only compatible with HK MR762 Lowers  

 

NFA DISCLAIMER

This Item is regulated by the National Firearms Act (NFA). Please check with your local and state municipalities for any further regulatory requirements. It is the buyer's responsibility to make sure they comply with all NFA rules and applicable laws.  If you need further information on NFA regulation, please contact an attorney.    

 

PRODUCT RESTRICTIONS

Not all HK webshop products are shippable to all U.S. states. Please check local laws and regulations before ordering. Heckler & Koch does not warrant that a person may legally purchase, possess, or carry specific items offered on this website according to federal, state, or local laws. A person placing an order for such items on this website warrants that he or she is an adult and is under no legal restrictions which would prohibit such person from ordering, owning, possessing, or transferring these items under applicable federal, state or local law.