Sorry ajdevi92 I didnt me to be a pain, I did do a search for piston valves and I got like 13000 hits, after going thru a few I just got confused by some of the diagrams and explenations :?

Thanks XxtriviumxX and MrCrowley , I now have alot of good info to work with.

Thanks ant glad you liked ...

Thank for the input guys,
Carlmans breech idea is cool, as for the QEV gun it looks cool but I have no idea how that work :) .

ajdevi92, Have been searching for info on piston valves, but there is so much info I am a bit confused, do you know a good to start so I can get an understanding of how ...

G'day everyone,

I am new to this forum and airsoft/bb guns. I had a chance to play with an airsoft pistol last year when I was on holidays in the U.S. but I didn't bring it back to Aus for fear of getting caught.

The main reason I wan to make a BB gun is for my interest in High Speed photography ...