Diamondback Barrel Features The Diamondback Barrel is machined from 416R stainless steel a corrosion-resistant alloy favored for precision rifle barrels due to its machinability and ability to hold tight tolerances. Chambered in .223 Wylde this 18 inch barrel accepts both .223 Remington and 5.56 NATO ammunition while maintaining tighter chamber tolerances than a standard 5.56 chamber improving accuracy with match-grade .223 loads. A 1:7 twist rate stabilizes a wide range of bullet weights from lightweight varmint loads up to heavier longer-for-caliber match bullets. The black QPQ finish adds a layer of corrosion and wear resistance over the bare stainless steel while keeping the barrel s exterior low-glare. This Premium Black Series barrel includes a Nickel Boron coated extended M4 feed ramp extension which smooths the transition of a round from the magazine into the chamber for more consistent reliable feeding across magazine types. At 41 ounces the barrel carries enough mass to help manage heat during sustained strings of fire without becoming unreasonably front-heavy on a complete rifle build. Diamondback machines its barrels to AR-15 pattern specifications so it drops into a standard AR-15 upper without modification. The Diamondback Barrel is available for sale at GrabAGun for AR-15 builders looking to upgrade their accuracy and reliability in .223 Wylde. Diamondback Barrel Specifications Manufacturer: Diamondback Model: Barrel Caliber: .223 Wylde Color: Black QPQ Material: 416R Stainless Steel Twist Rate: 1:7 Barrel Length: 18 Thread Pitch: 1/2x28 Weight: 41 oz Feed Ramp: Nickel Boron Extended M4 Available At: GrabAGun