I own a Remington 870 Express (20 gauge) shotgun. It came complete with a pistol grip, collapsible stock, and 7-shot extended tube. I'm very satisfied with it. However, I would like to mount a flashlight on it. I've seen a bunch online but I don't want to make a jump to buy something that won't fit properly. I also don't like the systems I've seen that turn the light on when you rack the shotgun. I'd like both actions to be separate. I love the flashlights with the push-button on the bottom.
My questions: Does anyone have any specific mounts/lights they like to use?
Do most mounts that fit the 12 gauges also fit the 20 gauges?