It bolts right on or you can use the rail, I’m using a short doubles adaptor like an STA just to bump out the tank bottom. I actually like the VDH 18 wing better for this plate but I wanted to try the Deep 6 for the quick dry aspect.Hey lexvil how does the deep 6 wing work with the FP? Do you need to use the rail to make it work or the wedge block? Or can you attach it directly to the plate?