JohnBT said:
There is no law requiring a safety on a gun. There is no law forbidding their removal...
That's really not the issue. There's no law in Arizona against using HPs for self defense. But we know from a post verdict juror interview, the members of Harold Fish's jury were negatively disposed towards him in part because of his use of HPs. We don't know how large a factor that, by itself, was in his conviction; but it could not have helped him. (And fortunately he won his appeal and is now a free man.)
So what if you're on trial over a shooting in which you claim self defense. What sort of impression will your having removed from your gun a perfectly functional safety device, installed by the manufacturer, make on a jury made up of people who have no knowledge of, or interest in, guns. Indeed, it's entirely possible that some members of your jury are at least a little afraid of guns and consider them to be wildly dangerous. How are such folks likely to feel about someone who removes a safety device from such a dangerous instrumentality? Might they consider such a person to be reckless? Might they question such a person's judgment?
Sure, if everyone agrees that your use of lethal force was justified, it won't matter. You won't be on trial.
But if the DA and/or grand jury decide that there is some good reason to dispute that your intentional commission of an act of extreme violence on another human being was justified, you will be charged and you will be on trial. Now it won't be a "good shoot" unless your trial jury concludes that it was.
And because you will need to put on evidence supporting your claim of justification, how your jury sees you will affect how they evaluate and respond to your story. The jury having some, even small, impression of you as in any way being a bit reckless or lacking in judgment won't help you.
But there is a very large difference between the HP issue that Fish had and disabling a safety device on your gun. HPs are more effective and especially appropriate for self defense. Using HPs gives you an advantage on the street and might therefore be worth a legal risk.
But one doesn't have to disable a safety device on one's gun to be able to effective defend himself. A Browning High Power can be effectively "combat tuned" without disabling the magazine disconnect. And if you really don't want a magazine disconnect, there are other suitable guns out there without that feature.