The only downside is, if you use the gun for self defense, and actually shoot someone with it, you can be accused of 'disabling a safety device'. In some cases this can be used against you in court, and if the jury buys it, can hold it against you. It has been used in the past, and resulted in people going to jail. If you're just using it for target work, then there's no problem.FedDC said:So wouldn't this solve all of the problems that people have with S II guns? I mean, if you are actually having those specific problems, why not just swap out the pins and be done with it? It seems like it would solve all of the problems. There must be some sort of downside???