Bull AR15 Barrel

Criterion’s 24” Bull AR15 barrel features a heavy frame that offers superior heat absorption, stability, and rigidity, making it a favorite amongst varmint hunters, bench rest competitors, and long-range shooters. This barrel will provide maximum velocity for those looking to stretch the effective range to its limits.

Why the Bull Contour?

• Added chamber material - absorbs heat evenly during hard use and increases rigidity
• Heavy frame - superior heat absorption, stability, and rigidity
• .223 Wylde chamber - safely and reliably fires both .223 Remington and 5.56 NATO with improved accuracy due to more consistent chamber pressures
• Stainless Steel - improved barrel break-in
• Honed - refines bore for superior uniformity to reduce bullet deformation
• Hand-lapped - essential for accuracy and to minimize fouling
• Polished chamber - reliable extraction and feeding
• Rifle gas system - optimized gas port
• .936” gas journal - easy and secure installation
• 11° target crown - reduce potential muzzle damage
• Precision-machined barrel extension - safe and reliable feeding

Why Headspace Matters

Purchasing a headspaced bolt is not required. However, Criterion's headspace service guarantees optimal bolt to barrel fitment using premeasured bolts and certified headspace gauges, helping to maximize the performance and function of your build.

Headspace (the critical measurement from the bolt face to the shoulder of the chamber), must be checked for optimal performance and reliability. Proper headspace produces consistent chamber pressures and seating depths which results in increased accuracy and reliability, while reducing wear and tear on internal parts and components.