I have difficulty pulling certain hand gun triggers P226 specifically and the Beretta 92FS but not limited to. For those particular guns, is it possible to modify the pressure required to pull back the trigger (Hair-Trigger) without dramatically effecting the gun. I have nerve damage which effects certain muscles in my hand weakening it's ability to squeeze the trigger. I know very little about guns at the moment and have been considering joining the armed forces, but this presents a huge problem at the moment. Any information would be greatly appreciated.