Ok, I wasn't sure because there are many different rails... top, side, scope mounted, forestock, barrel etc... I just don't know the right terms for them.
If you plan on using the safety, a pistol grip will make it a little awkward. Not a big deal but something you should consider. If you get a Maverick by Mossberg, the safety is a push button on the trigger guard. A Maverick is interchangeable as far as parts and is less expensive.