I hated the guy that "tuned" their guns, added mods, adjusted, etc. Became department policy that no modifications/adjustments could be made without approval of the department armorer...and general the gun had to be factory stock to be carried on duty.
To lighten a trigger is just silly on a combat/defense weapon. You're going to be badly stressed, light trigger increases chance of unintentional discharge.
Fellow officer shot himself in the rear holstering a S&W revolver with a trigger shoe (makes the trigger wider) in a break front holster. The trigger shoe extended beyond the edge of the trigger guard, trigger pressed by lips of holster.
I spent a couple days picking bullet and concrete fragments out of my leg after the fellow in the locker next to me discharged his revolver into the floor between us when holstering in a break front holster. Possibly got the retaining strap thru the trigger guard in front of trigger.
Guys would back off on the hammer spring screw to lighten the trigger on a S&W revolver. Misfires result because of light hammer fall.
Twice guys unloading Remington 870 pump guns had negligent discharges....one into the side of the dispatch building (managed to miss the bullet trap), the other was through the roof of the patrol car.
At the start of shift I grabbed an 870 out of the gun safe to find that it was loaded, round chambered and safety off. Think about taking a long gun out of a safe, it's stored muzzle up, you grab it and pull it toward you.
