I set one of Just Paintball's ions up at Kidderminster yesterday (a yellow and Black one, if you tried it or saw it floating round) all i did to it was take it out the box, put its 9V battery in it, bang on a preset air system and a Halo. No fiddling, no nothing, and the thing rips. I was well impressed for the price,and so was everyone who tried it out and played with it. dont think any other gun compares to it for £195.