Hammett, ID – JK Armament has partnered with Midwest Industries to offer our customers two fantastic, ready-to-run AR-15 upper receiver options! Available with either a 16-inch or an 11.5-inch barrel, the MI/JK upper comes with a JK HD War Eagle muzzle device pre-installed on the 1/2x28 muzzle threads.

Suppressor-ready out of the box, the MI/JK upper features an MI Enhanced Bolt Carrier Group, a Radian Weapons SD Charging Handle, and a reliable DI gas system. Chambered in 223 Wylde with a chrome lined Criterion Core Barrel in 1:8 twist, the MI/JK upper will accurately run both 223 Remington and 5.56 NATO ammunition.

Grab your G.O.A.T., SBRX, or other JK 155 series suppressor with QA mount and rock and roll with the new MI/JK Armament suppressor-ready upper receiver!

? Suppressor ready complete upper in collaboration with JK Armament

? Includes JK Armament HD War Eagle Comp/Flash Hider

? JK Quick Attach Taper Mount compatible

? Includes MI Enhanced Bolt Carrier Group

? Radian Weapons SD Charging Handle

? Forged 7075 T6 Aluminum Upper

? Hard Coat Anodizing

? T-Markings on Receiver

? 16 or 11.5 inch Chrome Lined, Phosphate, 4150 CrMoV

? Threaded 1/2x28

? Chambered in .223 Wylde

? Criterion Core Barrel, 1/8 Barrel

? M4 feedramps

? Mid-Length Direct Impingement Gas System

? MI-NF13.5 or MI-NF10.5 Night Fighter Series M-LOK Handguard

Weight 3lb 4oz. 11.5"
Weight 3lb 8oz. 16"

Magpul® and M-LOK™ are trademarks of Magpul Industries Corp

MI+JK Suppressor Ready Uppers are available for shipment straight to your door from the JK Armament website HERE!

About JK Armament

JK Armament was established in 2019 in gorgeous southern Idaho near the Snake River. JK’s founder, Jake Kunsky, is a U.S. Army veteran and served as Special Forces Group head armorer. He has over 20 years of machining and weapons experience from the automotive, farming, and firearms industries as well as from his time in the military. Through four combat deployments to Iraq and hands-on experience as head armorer, Jake developed a passion and interest for designing and manufacturing the best firearm suppressors in the world.

JK Armament’s Patent Pending product line is the culmination of Jake’s experience developing products for NEMO Arms, Gemtech Suppressors, Smith & Wesson, and Maxim Defense. His vast experience with suppressor and weapon design, testing, engineering, and machining is why JK Armament products set the bar for the suppressor industry. Nothing else is more Mission Configurable, versatile, and user serviceable, and it’s all backed up by JK Armament’s Unconditional Unlimited Lifetime Warranty.