Hi There, I Am fully Aware that Markers which have been modified to fire on full automatic are illegal, But what about the upgrades like the Tippmann A-5 Response Trigger and E-Grip? Now the E-grip gives you 4 different rates of fire, single, 3 shot, auto and tournament. And the response trigger reacts to your finger pulling the trigger and resetting it sort of making the rate of fire much faster. I have a response trigger that took me ages to put on, with limited instructions as well, so is this illegal? And if it is then why do UK paintball shops stock the Tippmann A-5 With the e-grip or response trigger? Its a bit like saying "Hey, you can buy this, but you aren't ever allowed to use it."