Trigger pull weight is one such modification. By far, the most common handgun type you'll find in my hands is the 1911 pistol, followed closely by DA/SA revolvers.

It added that the gun could not detonate “without a pull of the trigger when the hammer was struck directly.” Such response is normal for this type of revolver, the report stated.

The actor has repeatedly denied pulling the trigger of a revolver that went off on the film’s set, killing its cinematographer. The gun was not supposed to be loaded with live ammunition.