Grizzly customs uses a ghost ring sight from LPA that is made to mount on top of a shotgun receiver, to fit it they mill it to the shape of the 1895. It looks great and is click adjustable, problem is they want 375 bucks to provide the sight, mill it, and fit a proper front fight. LPA makes the same sight to fit on a weaver or pic. type rail which I could toss on top of the marlin receiver as if mounting a scope and then put the sight on the rail. Has anyone else tried this or know of a problem I might encounter, I know I'd have to go higher on my front sight but that should not be a problem.