Gen 2 .40 cal Complete Upper Receiver, Rear Charging

New Frontier Armory

(2 reviews) Write a Review
4.63 LBS
Gen 2 .40cal PC Complete Upper
Pistol Cal
.40 cal
BBL Length:
4", 8", 16"
Black Ano
Charge Handle Type:
Rear Charging

Gen 2  .40 cal Pistol Caliber Complete Upper


Specifications and Features of the 9mm Pistol Caliber Complete Uppers

  • Gen 2 Pistol Caliber Billet Upper with integrated LRBHO
  • .40cal Bolt Carrier Group – BCG (Glock & Colt Lower Compatible)
  • .40cal AR Barrel (1:10), 4", 8" or 16"
  • Lightweight Free Float Hand Guard, M-LOK
  • Standard ½” Crush Washer
  • Standard Flash Hider .45
  • Standard AR-15 Charging Handle

The New Frontier Armory Pistol Caliber Complete Uppers are proudly MADE IN THE USA by hard working American men and women.

Weight: 4.63 LBS
Dimensions: 28.00 x 4.00 x 4.00 in
Color: Black Ano

2 Reviews Hide Reviews Show Reviews

  • 5
    Great upper

    Posted by Mark Heinen on 4th Jan 2024

    Picked up this 4in complete upper and I’m astounded by the quality for the money spent! Will continue to buy from NFA, just picked up 2 More lowers today!

  • 5
    FANTASTIC upper receiver

    Posted by Ramon m. on 7th Aug 2023

    This is my 2nd upper from New Frontier Armory and I could not be more pleased with the fit and finish of the receiver. Being a .40 cal the other moving parts will all play a part in its functioning, however, who doesn’t love the thump of a .40 cal carbine!! I did have to use a 10oz buffer weight to ensure enough mass on the recharge but tweaks are to be expected l!

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