AR-15 300 BLACKOUT CORE SERIES

The Criterion CORE Series is an ideal pairing for the versatile .300 AAC Blackout cartridge. The modern taper improves on government contours, eliminating harsh diameter variations and adding material where it is needed the most.

The CORE Series’ continuous taper design aids in heat absorption, harmonics, balance, handling, and ultimately, accuracy. This contour is an ideal balance between weight and intelligently distributed material capable of enduring hard use and intensive training schedules without slowing you down.  The CORE Series features a balanced front end that works for you when used in conjunction with modern accessories like weapon lights, IR lasers, suppressors, and clip on night vision devices.

With a 1-7 twist, the 8.5″ & 10.5” can stabilize a wide range of BOTH subsonic and supersonic bullets. If you plan on using a suppressor, it will also ensure subsonic loads do not push beyond the supersonic threshold.

The CORE Series helps you handle real-world applications by maintaining exceptional performance and rugged reliability during hard use. These barrels work for you wherever mobility is a priority and performance is essential.

ADDITIONAL ACCESSORIES

Include a bolt, bolt carrier group, gas block, and gas tube that pair well with our barrels. Our headspace service guarantees optimal bolt to barrel fitment using premeasured bolts and certified headspace gauges. This helps to maximize the performance and function of your build. Choose from a BCM Bolt Assembly, BCM Bolt Carrier Group, or Fulton Armory Bolt Carrier Group. Pair a Badger Ordnance .625 Gas Manifold and BCM Gas Tube with your purchase. Every product offered is backed by our satisfaction guaranteed.

HEADSPACE

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.

FEATURES

• Made from 4150CMV ordnance-grade barrel steel for increased durability and superior heat resistance during hard use
• Chrome-lined for improved barrel life and corrosion resistance without degrading accuracy through our chrome-lining process, which is the most refined in the industry
• Honed and hand-lapped for superior bore uniformity and easier cleaning, as well as improved and consistent accuracy
• Polished chamber for reliable extraction and feeding
• Pistol gas system with optimized gas port for suppressed or unsuppressed use
• 0.750” dimpled gas block journal for easy and secure installation
• 5/8-24 TPI muzzle threads compatible with most muzzle devices and suppressors
• 1-7 twist rate, ideal for use with both subsonic an supersonic loads
• Mil-spec magnesium phosphate exterior finish for added corrosion resistance
• Precision-machined barrel extension for safe and reliable feeding

300 AAC Blackout

The .300 AAC Blackout cartridge was designed to shoot .30 caliber bullets from the AR15 while maintaining parts compatibility and standard capacity. It shoots supersonic ammunition with ballistic performance similar to the 7.62 x 39 cartridge, and also accepts heavyweight subsonic ammunition which is ideal for suppressed fire. This cartridge is used in a variety of ways from tactical applications and hunting to competition, self-defense, concealed carry, and range use.