mrm33533k5Aero Precision 12.5" 5.56 Government Profile CMV Barrel, Carbine Length Barrel is in good condition, probably around 1000 rounds or less through it. Details below. CALIBER - 5.56 NATO BARREL LENGTH - 12.5" BARREL MATERIAL - 4150 CHROME MOLY VANADIUM BARREL FINISH - QPQ CORROSION RESISTANT BARREL RIFLING - BUTTON RIFLING BARREL EXTENSION - M4 GAS SYSTEM LENGTH - CARBINE GAS BLOCK JOURNAL - .750" TWIST RATE - 1:7 INCHES THREAD PITCH - 1/2-28 THREADED COST - $100 + Shipping
