My local store has the KP345PR on sale this week and I'm thinking about getting one, but had a couple of questions first. Has anyone had a problem with the internal lock on theirs? I worry that it might lock up on it's own like the S&W revolvers are known to. Is the lock removeable? Is the mag disconnect removeable? Did Ruger fix the problems it was having with it? Any other problems I need to be aware of with the P345? Thanks.