Deer Hunting

Stoeger M3500 As a slug gun

Ok so i have been wanting a Semi-auto Shotgun but i also want a slug gun. So i have been reaserch online about slug guns but also on different types of shotguns. but what i want to know is if i can get a semi-auto shotgun that will be a slug gun? Like the stoeger m3500 i know its bird gun but could i in fact turn into a slug gun? if so how? and i havent bought one yet but i do want it, if in fact i can find a Barrel for it