I am a firm believer in 870s and glocks. The reason I'm wanting a tactical stock for a 20 gauge is because I have a youth model with a 21" barrel. My 12 gauge wing master is to big for the wife to shoot skeets so I purchased it but a 21" barrel is to short for skeet. I saw it has a perfect opportunity to make a tactical shotgun since it has a short barrel and very little recoil. I believe a 12 gauge restock will work but will be a little big at the receiver. However I can't even find a black forend for a 20 gauge.