Criterion Barrel’s Hybrid contour is a mid-weight barrel that offers a perfect balance between weight and intelligently distributed barrel material for excellent heat absorption and consistent harmonics. This barrel can be easily carried in the field all day but will also provide exceptional performance even under extreme use and high rates of fire.

Headspace (the bolt to barrel fitment), 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. Add a headspace bolt to your order, and Criterion Barrels will pair a bolt to your barrel for optimal performance.

FEATURES

• Chrome-lined internally for superior barrel life and corrosion resistance.
• Criterion Barrel’s chrome-lining process is the most refined in the industry and will not degrade accuracy.
• .223 Wylde chamber that is designed to safely and effectively fire both .223 Remington and 5.56 NATO ammunition.
• Honed and hand-lapped rifling for bore uniformity and a pristine internal finish – aids in barrel cleaning and paramount for accuracy.
• Finely polished chambers for reliable extraction and feeding Rifle gas system compatible with AR15 gas tube system.
• Gas hole tuned for proper function with and without suppressor.
• 0.750” Gas Block, dimpled for ease of installation and solid lock-up.
• 1/2×28 TPI muzzle threads compatible with a wide range of muzzle devices and suppressors.
• Precision-machined barrel extension with M4 feed ramps.

• Milspec Carpenter No. 158 ® Steel
• HPT (High Pressure Test/Proof)
• MPI Bolt (Magnetic Particle Inspected)
• Shot Peened Bolt
• Tool Steel Extractor
• BCM ® Extractor Spring
• Black Extractor Insert
• Mil-Spec O-Ring, .750 ID