ar 15 barrel

18” 22 NXS. Rifle length gas. I built 24” for more speed. Uses necked down 6 Hagar brass and 6.8spc bolt face. 22 nos will not shoot in this chamber. Holds a few gns more powder. Has about 150 down the tube. Shoots 3/4 with 53 vmax at 3400, or 3100 with 73 elds. Minute of a coyote. I’ll take...