Not sure if this is the best suited to MPSIMS but why wouldn’t a police officer hand his gun to his partner when there is a situation involving a tussle or on the ground situation. If Cop A needs to do some kind of forceful takedown, why couldn’t Cop B hold his gun for him? This would surely eliminate a lot of the “he went for my gun” instances.
Who are they handing it to? Now the gun holder is completely useless to do anything other than hold the gun. Try subduing someone who truly doesn’t want to be subdued. I don’t mean your friend who is going to give up as soon as they have some discomfort. When subduing a combative person 2 is better than 1 and 3 is even better. When I’m getting my ass kicked I don’t want someone standing there as my squire. I want him to be able to jump in.
Where is he going to put the gun? Now he has an exposed gun in his hand. Is he going to walk away and leave his partner?
Modern weapons retention holsters will keep most away from the officer’s gun. Although about 10% of police murders happen with their own gun. it is much safer to hold on to it and have both officers subdue and handcuff the suspect as quickly as possible.
All of the above and also often things go south too quickly and unexpectedly for the officer to take the time to unholster, unclip and pass their firearm to their colleague even if s/he had a mind to do so.
Not to mention most people don’t like having a loaded gun handed to them in the first place, especially in the heat of the moment and when you have no idea what condition it is in.