Originally Posted by coachster
Because they have been proven to not work when shooting full auto. It will slow down the first BB but the following BB's instantly jump up in fps.
That inconsistency, even if you say you'll only shoot semi, is an issue for field owners as your gun can exceed the limit set by their insurance.
I have often wondered if this would still apply if you had a gun that only shoots semi or is a BA. If its not capable of shooting full auto what would the harm in them be?