Egw picatinny rail80800 - Evolution Gun Works HD Picatinny Scope Mount, Mossberg

I have no complaints about ordering or shipping the EGW Picatinny rail, but I'm not happy with the EGW 0 MOA Picatinny rail. The rail does not fit flush toward the front on my Mossberg 930 Thunder Ranch shotgun. You can see a small space/light between the shotgun receiver and the rail. Since I don't know how its made, I have to assume it's from the metal and machining stress. I have a pump action Mossberg JIC shotgun and while the Mossberg rail is shorter there is no space or light between the rail and shotgun receiver. On the Mossberg shotgun you also have to make sure you don't tighten the back two screws too tight. If you do like I did the bolt will not slide forward. I believe the screws are a hair too long. It would also help if they used the T15 size bit instead of the T10 bit which broke. II previous tried the 20 MOA rail which was too high and broke the T10 bit. The Mossberg Picatinny rail has the T15 screws. The trouble is Mossberg Picatinny and EGW 0 MOA Picatinny rails are harder to get than ammo. I'd recommend the Mossberg Picatinny.