so after work today me and a couple co-workers went to the local sporting goods store and one of the guys is 20 and was looking at a Mossberg 500 12 that just has the pistol grip and a 18.5" barrel. The big question was if you needed to be 18 or 21 to buy one of these shottys. Id say 18 but being the thing is strictly pistol grip i could see where the 21 would be the age. I live in Montana any ideas on an age? Hell the kid behind the counter couldnt even tell us but i dont thing he could even tell us the difference between a rifle and a shotgun.