18" FDE
Shot it with PMC Bronze, PMC XTAC 193 55, S&B 55, Federal XM193, Federal AE223, and Independence 193 55. Used the supplied IWI 30 round mag and a 2nd Gen PMAG 20 rounder.
All ammo and both mags functioned the gun 100%. Accuracy appears roughly on par with with my BCM ARs with...