Shotgun pull and release triggers

Question
99.999% of guns use "pull to fire" triggers. A very small percentage of shotguns are manufactured with "release to fire" triggers. On these guns if you pull the trigger nothing happens until you release the trigger, when it then fires.
What I am wondering is, has anyone produced a double-barrel shotgun with a trigger that fires one barrel on "pull" and then the other barrel on "release"? Obviously, the safety would have to be able to disconnect the "release" barrel if you chose to not fire the second barrel while you were holding the trigger back. While this system would not be the safest for inexperienced shooters, I feel that it would be extremely fast and effective for highly experienced trap shooters.
My question is: Since Federal law defines a machine gun as 揳ny weapon which shoots, is designed to shoot, or can be readily restored to shoot, automatically more than one shot, without manual reloading, by a single function of the trigger?would my configuration be considered a machine gun? I take the federal definition literally when it says, "...a single FUNCTION of the trigger" and believe the "pull" could be considered one function and the release a second function and therefore this operating system would not be considered a 2-shot "machine gun" but I would like your opinion.

Answer
Bob,

The release trigger is something mainly geared towards sporting clay as you stated. I am not familiar enough with competition sporting clays to even comment on their do's and do not's. As for tue question of the double barrel with one trigger pull, firing on the pull and firing on the release would violate the Legal requirements per BATF's guidelines because 2 shots were fired using one cycle of the trigger. The Release trigger is however legal so long that the gun only fire's ONE shot per trigger cycle. In the case of a release trigger, pulling the trigger and then releasing it is one function, and it only fired one shot. As for the release trigger being extremely fast, your mind will have to process the information the same way as if you were using a pull trigger. From what I have just read, somewhere between 1% and 3% of the WORLDS BEST trap shooters would benefit from having a faster release on the trigger. You may very well be a World Class trap shooter and it very well could benefit you. You will have to judge your ability and what works best for you.


Best of luck!