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AR9 Upper Assembly – 4″ / 9mm / 1:10 / Keymod / 160891

Icon - 9MM AR CaliberIcon - 1:10 Twist RateIcon - 4 AR Barrel

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. - [READ MORE BELOW]



Stock Status: Available for Immediate Production

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  • 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 – 4″ / 9mm / 1:10 / Keymod / 160891

➲ CBC Keymod Handguard

New for 2020, these AR-15 handguards are built to provide rugged, reliable performance. Designed with the advanced shooter in mind, these handguards are both sleek and ergonomic in the hand and that translates into faster on-target performance and ease of use. These AR handguards provide Keymod slots for mounting attachments and feature robust steel mounting hardware to ensure an easy rock-solid installation.

➲ 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.

➲ Barrel

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.

➲ 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.

CBC provides a wide selections of AR-15 upper assemblies in a variety of styles and lengths - all partial AR-15 uppers are assembled with everything less the charging handle and bolt carrier group. Our partial upper assemblies offer quality and performance that will satisfy the most demanding shooter. Better yet, all CBC AR-15 uppers are custom built-to-order enabling us to provide you with the best prices you will find anywhere. The quality of our AR-15 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 AR-15 upper assembly at CBC today!

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