This AR15 upper receiver assembly comes ready to attach to any Mil-Spec lower receiver. It is built around a 20 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. It is chambered in .223 WYLDE providing the capability of shooting .223 Rem or 5.56 NATO cartridges.
Outfitted with a 15″ 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. A favorite among long range and varmint hunter enthusiasts, this upper assembly features a 4150 chrome moly steel barrel with a heavy profile designed to accommodate .936 gas blocks.
- Type: AR
- Finish Color: Black
- Caliber: .223 WYLDE
- Barrel Finish: Nitride
- Barrel Length: 20”
- Twist: 1:8
- Gas System: Rifle
- Receiver Material: Aluminum
- Receiver: Mil-Spec, Forward Assist & Dust Cover Installed
- Does Not Include BCG / CH
- Rail: 15” M-Lok
Product Details: AR15 Upper Assembly – 20 Inches / Bull Barrel / 223 WYLDE / 160006
➲ .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 aluminum 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.
➲ 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.
➲ Upper Receiver
The foundation of all good AR's 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.
➲ M-LOK Handguard
Your AR-15 handguard has huge implications in terms of how much you enjoy your shooting experience. Our M-LOK handguard offers more than just the accuracy enhancements that come with a free-floating rail. It features a full length picatinny top rail that sits flush with M4 flat top receivers allowing you to have more space for optics and back up iron sights. The slim profile is comfortable to grip while still allowing enough room for low profile gas blacks underneath. This AR-15 handguard is machined from 6061 aluminum, has a hard coat anodized black finish, and generously sized M-LOK cuts for air circulation.
➲ Bull Barrel
This barrel delivers superb accuracy by increasing rigidity, decreasing harmonics and dramatically reducing felt recoil. A favorite among long range and varmint hunter enthusiasts, this 4150 chrome moly steel barrel features a heavy profile designed to accommodate .936 gas blocks. This barrel features a .223 Wylde chamber, giving the distinct advantage of being capable of shooting .223 Rem or 5.56 NATO cartridges.
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!