Precision and performance converge in the Guntec USA BAR-4.5-45 barrel, an essential upgrade for discerning firearm enthusiasts. Crafted from 4150 Chrome Moly Vanadium steel, this 4.5-inch barrel offers exceptional durability and a lightweight design of just 9.3 ounces, guaranteeing reliability without sacrificing agility. 1:16 twist rate for superior stabilization of 45 ACP rounds Lightweight at 9.3 ounces for improved maneuverability 5/8 by 24 thread pattern for compatibility with various muzzle devices Black nitride coating for corrosion and wear resistance Sleek straight profile enhances visual appeal Elevate your shooting experience with the Guntec USA BAR-4.5-45 barrel, your pathway to precision.