I have had an above average level of firearm training, but I am very much aware that I’m no expert.   I think anyone that claims to be an expert tends to have the wrong attitude and will eventually fall victim to complacency.  There is a pretty well known youtube video of an “expert” showing students about firearms as he ends up putting a bullet into his foot in front of a class of school kids.   One of the most important things I have learned about close and personal fighting with firearms is rifle and pistol sight differentiation.   On a rifle you can shoot a bullseye at 300yds with your ACOG, but at 6ft, you might end up putting a bullet 3 inches over a bad guys forehead due to the barrel and optic offsets.

Laser grips are no different when it comes to knowing that you will still have an offset. Most laser grips sit high above the grips and off to the right side of a pistol.   This will give you a windage offset and will be something you will have to put some serious thought into before you set your zero.  I’d recommend thinking about this while measuring rooms in your home and knowing the distances you may be defending yourself in, and then taking the firearm to a range for zeroing.    I personally prefer laser grips that turn off and on with a grip button and do not need to be switched off and on.    Like lights on a firearm, sometimes it’s a liability to always be projecting something from  a given position.