correct me if im wrong
i think the defintion of full auto is two or more balls per depresion of the trigger - which is illegal in any form of firearm in the uk..
Turbo boards average your trigger pulls out to fire 3 / 3.5 balls for two pulls of the trigger, meaning 1.5 or 1.75 balls per pull - cheekily just this side of the law - but with it being so borderline and with steve unable to get a hard and fast ruling from da goverment the ukpsf recomend no one to use turbo, and i for one agree.
Who needs turbo boards when you can do ten balls per second or more on a semi???
