- 7075-T6 Aluminum
- Mil-Spec Anodized Receiver
- Rifle Length Gas Tube Assembly
- 24″ .223 WYLDE Spiral Barrel
- 4150 Chrome Moly Steel Phosphate Coated Barrel
- Twist Rate: 1:8
- 15″ Keymod Handguard
- *Does not include Bolt Carrier Group & Charging Handle
This upper features a flat top M4 Mil-Spec upper receiver that is forged CNC Machined from 7075-T6 Aluminum, the hardest and most durable material of any upper! To ensure even more strength, the upper reciever is hard coat anodized. The 24” .223 Wylde barrel is the perfect marriage of design and precision! The Wylde barrel fires both .223 and 5.56 ammunition in less than 1” groupings at 100 yards! The barrel is made from the highest quality 4150 Chrome Moly Steel for accuracy and durability and features a 1:8 twist rate, rifle length gas system, and head spaced twice from the manufacturer.
Product Details: AR-15 Upper Assembly – 24″ / .223 WYLDE/ 1:8 / Spiral Flute / 15″ CBC Arms Keymod AR-15 Handguard / Rail
➲ .936 Low Profile Gas Block
The gas block is a critical link in the chain that is too often overlooked. This component ensures that your AR runs reliably. Made from high-quality steel with a smooth nitride finish, this gas block is efficiently designed to stay put with the percussion of gunfire. With its low profile, this gas block allows it to fit under the most ergonomically designed handguards and rails on the market.
➲ 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.
➲ Rifle Length Gas Tube
An essential component to your AR15 is the gas tube, which keeps your build up and running. This gas tube is constructed from corrosion resistant stainless steel ensuring a lifetime of service.
➲ Spiral Fluted 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. Due to being machined from 4150 chrome moly steel, this barrel contains a better cut, higher-definition rifling, crowns, and chambers, resulting in the ability to stay more accurate over its usable life. This barrel utilizes the popular and versatile .223 Wylde chamber, which allows for the safe usage of 5.56 NATO ammunition and enhance reliability. This is the perfect barrel for an AR build, keeping weight to an absolute minimum due to the fluting, while still offering a significant ballistic advantage.
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 and save with free shipping!