In this video, Kirk Evans, president of Texas Law Shield and U.S. Law Shield, goes over the civil implications of modifying trigger-pull weight on your firearms. Good news: If you have intentionally fired your gun, its trigger-pull weight is probably irrelevant from a legal perspective.
Before the issue of trigger-pull weight may come into play, the first question in the legal analysis could be, “Why was the person’s finger on the trigger before he or she intended to discharge the weapon?” He says that if you fired your gun like you intended, the fact that it operated with a very light trigger pull or a heavy trigger pull will likely be of little consequence. If you intentionally shot someone or something, the key legal issue will be whether or not you were justified in the shooting.
However, in the civil arena, Evans said a plaintiff’s attorney will try to make your modification of the trigger an issue, even if it’s not legally relevant. Particularly, in a situation of a non-intended discharge, the issue of trigger pull weight could be relevant.
In a situation involving a non-intended discharge, the law will likely impose a negligent or reckless standard to evaluate the conduct of the person discharging the firearm, and the circumstances surrounding why the gun discharged will be evaluated. This could hypothetically include the trigger-pull weight of your gun.