Criterion’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 we will pair a bolt to your barrel for optimal performance.

  • Chrome-lined internally for superior barrel life and corrosion resistance. Our 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
  • Carbine 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
Weight 2.5 lbs
Dimensions 18 x 3 x 3in
Length 10.5″, 11.5″, 12.5″
Contour/Profile Hybrid
Gas Length Carbine
Gas Block Dia. 0.750″
Muzzle Thread 1/2 x 28
Chamber 223 Wylde
Twist 1-8
# Grooves 6 Groove
Material 4150 CrMoV
Finish Chrome-lined, Phosphate
Weight 10.5″ 1.45 lbs.
11.5″ 1.55 lbs.
12.5″ 1.65 lbs.