I have a 9shot tokorov 9mm that I want another mag but I cant find one anywhere. I was thinking of getting another 9mm single stack mag that would be long enough and cutting out a hole so it would lock in the gun. I was thinking a 10 round sig 225 mag would work. Is it worth doing and what should I use to cut out the hole? Would it be ok to do this if the mag will go up in the gun? Help