Criterion AR-15 Hybrid Contour 18" .223 Wylde Nitride Barrel

$ 319.95

Criterion AR-15 Hybrid Contour 18" .223 Wylde Nitride Barrel

  • .223 Wylde chamber
  • Criterion hybrid contour
  • 18" w/ mid-length gas system
  • 1:8" twist
  • 1/2x28 threaded muzzle
  • Nitride, button-rifled

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.


  • .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
  • Barrel Length: 18"
  • Twist: 1-8 RH
  • Chamber: .223 Wylde (.223 Rem/ 5.56x45mm NATO)
  • Gas System: Rifle Length
  • Gas Block Diameter: .750"
  • Weight: 2.20 lbs
  • Finish: Stainless Steel (Nitrided)
  • Threads: 1/2x28