Pencil AR15 Barrel

Criterion’s pencil AR15 Barrels feature a balanced, light frame that is easy to carry in the field. These barrels are an attractive option for shooters in search of a minimalistic rifle that provides an excellent combination of precision, durability, and weight savings.

Why Pencil?

• Lightweight - enhanced handling, speed, and maneuverability
• .223 Wylde chamber - safely and reliably fires both .223 Remington and 5.56 NATO with improved accuracy due to more consistent chamber pressures
• Chrome-lined - improved barrel life and corrosion resistance without degrading accuracy
• 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
• Mid-length gas journal - optimized gas port for suppressed or unsuppressed use
• 0.625” gas block journal - easy and secure installation
• 1/2x28 muzzle threads - compatible with most muzzle devices and suppressors
• 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.