TRYBE Defense Balance Profile AR-15 Rifle Barrel in .300 AAC Blackout. Balance Profile hybrid contour blends government/pencil geometry for optimal weight and heat management. Constructed from 4150 CMV steel with a QPQ black nitride finish for enhanced hardness and corrosion resistance. Barrel features a 1-8 twist, 5/8x24 threading, M4 feed ramps for reliable cycling, an 11° target crown, SAAMI-spec .300 AAC Blackout chamber, and is ready to accept muzzle devices. Ideal for subsonic and supersonic configurations, including suppressed setups.