Getting a Good Pistol Grip - Home Defense Gun

Proper grip is so important. Make sure the pinky is extended at the target.

This is the same grip I use, am right handed and instead of locking my left elbow straight out, I lock and roll it up to prevent weapon movement that much more, am watching people spray out entire mags and still be deadly accurate in very little time.

I think a decent handgun comes with pretty good grips. While there is room for improvement, I get concerned with too many additions, in the event I use it for self-defense. In many cases, the prosecution will nitpick anything you add to try to portray you as "trigger happy", to include the ammunition you use. Things like lighter triggers, for example, may paint you as just looking to shoot someone, rather than needing to defend yourself. About the only things I will add are a rail mounted light, and night sights, since statistically most defense shootings occur during hours of low visibility. Also, those additions can be explained as being a safety measure, i.e. threat assessment, positive identification of said threat, and locating a backstop in the event force on force is required.

I use a Sig P226, Beretta 92A1, and sometimes (in the summer mostly) a Glock 26, though I'm not a huge Glock fan. All of those come with decent grips.

Something else to consider is that if you use your firearm in self-defense, all the money you spent on 'upgrades' will be in police custody, with your weapon, for a decent amount of time.