What qualities should i be looking for in a HD shotgun? my thought process was shorter barrel length, pistol grip and tac rail to mount flashlight/laser. since joining the railroad my fiancee is gonna be home a good bit without me there and i want to make sure she has the easiest and most effective HD weapon money can buy. what are your thoughts on the matter? what qualities make up your HD shotgun? what gauge? pistol grip? sights? what companies? thanks!