So Russell, what you're saying is that they
say that guns must be semi only, but they explicitly won't be testing for it? PSP/PA ramping certainly won't be allowed by these rules, as a PA compatible gun could shoot 2 more balls after the last trigger release (5bps <-> 15bps).
And when does any marker shoot when you let go of the trigger
When it's buffered a shot which can't be fired when the trigger was pulled. Most electronic markers do that already.
As for the mechanical bounce test... well, it's not looking for bounce at all, only over-sensitive triggers, so it's a misnomer (or a misunderstanding of what causes mechanical bounce.) Does this mean we can all have uber-bouncy triggers again as long as they don't fire when you bump the marker? And how hard is the judge allowed to "bump" it to check?