There is an idea that forged receivers are stronger because the forging process slams the molecules of the aluminum alloy into alignment. Upper receivers come either forged or machined. These features are less useful with the 9mm, anyway. Smooth side receivers are lower profile than standard and lack the protrusions common on ARs like a shell deflector and forward assist. This is why building such a firearm can be so rewarding. There are a wide variety of customization possibilities when selecting a 9mm AR upper receiver. Gas block front sights are less common than on standard ARs. Rear sights are usually not included, while front sights are hit and miss. Forward assists are less common on 9mm uppers than they are on standard AR receivers.Ī dust cover is also an optional item. Charging handles come in a number of varieties, including classic M4 and non-reciprocating. Inside, there will be a bolt carrier group. 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.First, there will be a barrel with a gas system and handguard. 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. Our partial upper assemblies offer quality and performance that will satisfy the most demanding shooter. 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.ĬBC 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. 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. CBC upper receivers offer best-in-class quality while providing you years of dependable service. The foundation of all good ARs is built upon a dependable upper receiver. This is the perfect barrel for an AR9 build, keeping weight to an absolute minimum, while still offering a significant ballistic advantage. It is chambered 9mm chamber, with a 1:10 twist rate. This barrel has a nitride finish for increased strength and durability. This barrel is machined from 4150 Chrome Moly Steel, heat treated to RC 28-32 hardness, and properly stress relieved. Designed for corrosion resistance, this barrel will not let you down. The barrel is one of the few components that directly affect the accuracy and weight of your build. 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. 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. These linear compensators are machined from quality steel and finished with an exceptionally corrosion resistant salt bath nitride for a lifetime of service. The CBC Afterburner compensator is a muzzle device that designed to reduce flash intensity while suppressing recoil. Includes robust steel mounting hardware to ensure an easy installation and a rock solid platform. Designed with the advanced shooter in mind, these handguards are light and ergonomic, features that provide faster on-target performance and reduced fatigue. New for 2022, these AR-15 handguards are built to provide rugged, reliable performance. Product Details: AR9 Upper Assembly – 4″ / 9mm / 1:10 / M-LOK / 160899 ➲ M-LOK Handguard
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