I already have a Sub-2000 in 9mm. Would it make sense to get a Hi-point in 9mm to save on ammo cost or should I go with the .40? I have been waiting on a decently priced hi-point with ATI on the forum but then I thought, duh? Why not buy one used frommy gun shop and have them install the stock. They have both the 9mm and 40 there 159.99 and 169.99 used. I called and asked them if they have the stock and the cost of it and to install it. Total came out to be around 260.00 plus tax Figured I might as well go that route instead of buying it on the web. That way I can at least inspect the gun first. I just dont know if I should go 9mm or 40 thoughts?