Criterion Core 8.5″ 300BLK Barrel, 1:7 Twist 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. The Criterion CORE Series is an ideal pairing for the versatile .300 AAC Blackout cartridge. The modern taper design is a departure and improvement upon “government contours”—profiles that have harsh diameter variations and lack material where it is needed 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 devises. 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 are not pushed beyond the supersonic threshold. FEATURES: Chrome-lined for superior barrel life and corrosion resistance. Our chrome lining process is the most refined in the industry and will not degrade accuracy. Honed and hand-lapping rifling produce perfect bore uniformity and a pristine internal finish that aids in barrel cleaning and is paramount for accuracy Finely polished chambers for reliable extraction and feeding Gas port tuned for proper function with and without suppressor Precision-machined barrel extension and M4 feed ramps SPECIFICATIONS: Length: 8.5″ Contour: CORE Series Gas System Length: Pistol Gas Block Journal Diameter: 0.750″ Thread Pitch: 5/8×24 Chamber: 300 AAC Blackout Twist: 1:7 Twist # of Grooves: 6 Grooves Material: 4150 Chrome Moly Vanadium Finish: Chrome-lined, Phosphate Actual Weight: 1.15 Pounds Note: All NFA rules apply Click here to browse our entire selection of Barrels.
