I just bought a Model 10FCP Model #19055 w/5R and it came with a 10 round box magazine instead of the 4+1 magazine it was supposed to come with. Is this typical from anyone's experience to get the wrong magazine with this model #? I just want to make sure it is the right gun, are there any other way to check to see if this is the correct gun I bought. On the barrel it just says"Model 10"