Actually, I’d quibble even a little bit further. At least in Oklahoma, the “make my day” and “stand your ground” laws aren’t so much immunity from prosecution as a set of rebuttable presumptions in the defendant’s favor. They’re mention immunity from prosecution, but there are ways around that.
(More for readers than the author): In criminal prosecutions, the prosecutor (state) has the burden of proof. In affirmative defenses (such as self-defense), the defendant essentially admits the truth of the prosecutor’s factual allegations, then offers additional facts to establish the defense, with the burden of proof resting on the defense. “Make my day” and “stand your ground,” when invoked, essentially shift the burden back to the prosecution to show that the presumptions *aren’t* reasonable.