Got my m4 zeroed. I have always known there was a reason Benelli had a zero-able FS on these shotguns, this one was a bit off, but I think the trulock choke shifted zero over from where the Benelli one was. Every aftermarket choke I ever had shifts zero to the right, compared to Benelli. It shot about 2" right (25y) until I moved the sight over to where you see it.