• Home

Stern Defense 9mm Complete AR-15 Upper for Glock-Style - M-LOK - 16"

Manufactured by Stern Defense
Manufactured by Stern Defense
(0) No Reviews yet

In Stock

Standard orders will ship out 1 business day if ordered by 3:30 pm CST, Monday-Friday. FFL orders will ship within 5 business days or less as long as we have the information for the transfer destination.

For individual Officer, First Responder, and Military pricing please make sure you are logged in. Click here for details



The Stern Defense Complete 9mm Receiver Group comes fully assembled with all the features you want in an AR-9 carbine. All you need is a standard AR-15 lower receiver and compatible Stern Defense pistol magazine conversion kit and your PCC is complete. This Upper features a 16” barrel precision machined from 4150 chrome moly steel with a chamber designed to be reliable with anything from common plinking rounds to defensive hollow points. It features a 1:10 twist rate, which is more than enough to stabilize all weights of 9mm ammunition. Attached to the 1/2x36 threads is the SCB-9 muzzle brake to help eliminate muzzle rise. It has been full auto tested to ensure the 4140 steel and Nitride construction will last years of abuse. Since it is a blowback 9mm design, no gas system is needed. This upper receiver combined with a magazine conversion kit will turn any Mil-Spec lower into a reliable pistol caliber carbine great for competition or plinking.

  • 16” 9mm barrel machined from 4150 chrome moly with Melonite finish
  • 1:10 twist rate and enhanced chamber for reliability with all ammo
  • Threaded 1/2x36 with a Stern Defense muzzle brake
  • 15” free float M-LOK handguard machined from 6061-T6 aluminum
  • 1.435” inner diameter for a slim profile
  • 7075-T6 aluminum upper receiver with hardcoat anodized finish
  • 8620 steel bolt assembly with removable weight
  • 15.5 Oz. with weight and 13.3 Oz. without weight
  • Glock cut and Manganese Phosphate finish
  • 4140 Steel enhanced extractor
  • Large latch charging handle

The free float M-LOK handguard is lightweight, durable, and offers plenty of room for customization. It is machined from 6061-T6 aluminum with a hardcoat anodized black finish and is attached with a steel barrel nut and rigid locking system. It is extremely slim with a 1.435” inner diameter, making it extremely comfortable to hold. The picatinny top rail continues onto the 7075-T6 aluminum upper receiver. This receiver is built to Mil-Spec with the forward assist and dust cover installed. It houses the heavy 9mm blowback bolt. This bolt features a Glock cut and is machined from 4140 billet AISI steel with a Manganese Phosphate coating. It has an internal weight that adds up to 15.5 total ounces but can be removed for an overall weight of 13.3 ounces. In order to work the bolt, this 9mm AR-15 upper receiver group comes with an enlarged latch charging handle. The large, textured latch makes it easy to quickly charge your rifle with an open palm.

With pistol caliber AR-15s on the rise in popularity, Stern Defense is leading the way with innovative components to convert your standard AR lower to be compatible with pistol magazines from Glock, S&W, and even Beretta in a variety of calibers. Stern Defense is located in Missouri and dedicated to helping you build the ultimate pistol caliber carbine.
See More


AssemblyComplete Assemblies
Barrel ContourMedium
Barrel Length16.1
Barrel Material4150 Chrome Moly Steel
BrandStern Defense
Caliber Gauge9mm Luger
Gas System LengthBlowback
Gas System TypeBlowback
Handguard15 in M-LOK Rail
Muzzle DeviceMuzzle Brake
Twist Rate1:10

WARNING: This Product can expose you to chemicals which is known to state of California to cause Cancer and Reproductive Harm. For more information, see www.p65warnings.ca.gov

Ratings & Reviews

No reviews available

Be the first to Write a Review