AR-10 Upper Completion Kit


  • Manufacturer: New Frontier Armory
  • Model: AR-10  .308 Upper Receiver Completion Kit
  • Compatible With: All standard AR-10 and .308 style upper receivers
  • -Dealer price will appear in cart when logged in as a dealer

In stock

SKU: MUP-UCK-308 Category:


  • Manufacturer: New Frontier Armory
  • Model: Complete AR-10 Upper Completion Kit
  • Compatible With: All standard AR-10 upper receivers

The New Frontier Armory AR-10 /.308 Upper Receiver Completion Kit is put together to help you get all the parts you need to complete your stripped AR-10 / .308 style upper receiver.

The kit includes the following six parts:

  • -Forward Assist
  • -Forward Assist Spring
  • -Forward Assist Roll Pin
  • -Ejection Port Cover
  • -Ejection Port Cover Spring
  • -Ejection Port Cover Pin


The New Frontier Armory AR-10 Upper Receiver Completion Kit is proudly MADE IN THE USA by hard working American men and women.

Additional information

Weight.10 lbs
Dimensions4 × .5 × 2.5 in

Questions and answers of the customers

  1. 0 votes
    Q Will this kit work with your AR 40 builds? answer now
    Asked by srivers2412 on January 3, 2019 3:45 am
    Answered by the admin

    No, this has nothing to do with a .40 caliber build, sorry.  This is a dust cover and forward assist for a 308 platform upper.

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