Diamondback DB Barrel .223 Wylde 18" Heavy 1:8 Twist Black QPQ

The Diamondback DB Barrel 223WR18H50B7 is a heavy-profile replacement barrel chambered in .223 Wylde, allowing safe and accurate function with both .223 Remington and 5.56 NATO ammunition. Designed as a drop-in upgrade for the AR-15 platform, this barrel measures 18 inches in length and features a 1:8 rifling twist for excellent stabilization across a wide range of bullet weights.

The barrel is machined from 416R stainless steel for superior accuracy and corrosion resistance, then treated with a durable Black QPQ (quench-polish-quench) finish that yields a hard, low-friction surface. The heavy profile adds rigidity and heat capacity for sustained fire and improved shot-to-shot consistency, making this barrel well-suited to duty, defensive, and precision applications alike.

Part of Diamondback's Premium Black Series barrel line, the 223WR18H50B7 is engineered for builders and shooters looking to upgrade or replace an existing AR-15 upper with a quality component at an accessible price point.