This AR15 upper receiver assembly comes ready to attach to any Mil-Spec lower receiver. It is built around a 7.5 inch, 4150 chrome moly barrel and has a black nitride finish. The upper receiver is a forged M4 flat top upper, allowing you to easily attach rifle scopes and red dot sights to the picatinny rail.
Outfitted with a 7″ M-LOK Rail that contains generously sized M-LOK cuts, this upper assembly allows for maximum air circulation around the barrel for faster cooling and keeps the handguard from getting hot to the touch. The rail also features a full-length picatinny top rail that sits flush with the upper receiver and has anti-rotation tabs to keep it locked in place. This partial upper assembly comes with a standard A2 flash hider that effectively suppresses muzzle flash and protects the 1/2×36 barrel threads if you are planning on adding a muzzle break in the future.
- Type: AR
- Finish Color: Black
- Caliber: 9mm
- Barrel Finish: Nitride
- Barrel Length: 7”
- Twist: 1:10
- Gas System: Pistol
- Muzzle: A2 Flash Hider
- Receiver Material: Aluminum
- Receiver: Mil-Spec, Forward Assist & Dust Cover Installed
- Rail: 7” M-Lok
- Lower receiver options include using standard AR-15 lower with a mag conversion kit or optionally you can mate this product with a dedicated 9mm Glock style lower receiver.
Product Details: AR9 Upper Assembly – 7 Inch / 9mm / Afterburner Compensator / 1:10 / M-LOK / 160031
➲ Upper Receiver
The foundation of all good ARs is built upon a dependable upper receiver. CBC upper receivers offer best-in-class quality while providing you years of dependable service. Boasting a MIL-SPEC type III hard coat anodized finish and machined from 7075-T6 forged aluminum, this M4 flat-top receiver delivers a lifetime of superior function. You want your AR built upon a solid platform - this receiver gives you the confidence that your AR-15 will function when it counts most.
➲ Afterburner Compensator
The CBC Afterburner compensator is a muzzle device that designed to reduce flash intensity while suppressing recoil. These linear compensators are machined from quality steel and finished with an exceptionally corrosion resistant salt bath nitride for a lifetime of service. It utilizes a linear design to direct the high-pressure gas behind the bullet in a straight line away from the shooter which results in a reduction of perceived noise. Due to its six-hole design surrounding the central bore, it provides effective flash suppression that preserves the shooter’s vision in low light conditions.
The barrel is one of the few components that directly affect the accuracy and weight of your build. Designed for corrosion resistance, this barrel will not let you down. This barrel is machined from 4150 Chrome Moly Steel, heat treated to RC 28-32 hardness, and properly stress relieved. This barrel has a nitride finish for increased strength and durability. It is chambered 9mm chamber, with a 1:10 twist rate. This is the perfect barrel for an AR9 build, keeping weight to an absolute minimum, while still offering a significant ballistic advantage.
All partial AR-9 uppers are assembled with everything you need less the charging handle and bolt carrier group. CBC AR-9 uppers offer 9mm function in a versatile AR platform. Experience superior quality and exceptional performance from every upper assembly you purchase from CBC. Better yet, all of our CBC AR-9 uppers are custom built-to-order enabling us to provide you with the best prices you will find anywhere. The quality of our uppers are backed by our Lifetime Warranty – if any CBC upper assembly becomes defective, we will repair or replace it at no charge. Get your partial AR-9 upper at CBC today!