01-25-2017, 04:39 AM
I do know that gas tubes can cause vibration issues and effect accuracy. My gas tube on my grendel barely touches the left side of my upper ( clover leaf hole ) and bugs the @$!#& out of me . Total free float would be my Zen. I took the gas tube out and shot single shot to see if it made a difference. It stated shooting every group 1/2" or less @100yds . After I tweeked the tube as good as possible Im getting an occasional 1/2 inch and mostly 3/4 inch @100yds . So I'm a believer in vibrations affecting accuracy.