Tnks for all!!
I'll use the first one maybe whitout regulator (but w/ pressure washer handle instead a blowgun)


And t block? Material??

which one is better hpa or co2?
at 35°C

Here at brazil i can find bbs 5,5mm max

Which diameter will be necessary to vortex block????
I'v to use pvc/alumminium block to support 3000psi instead a wooden one?

MaxuS wrote:Semi auto piston...

I'v to learn more about it.....

Suggestions to design and materials: vortex, diameter of barrel (pvc, cooper)..... The one in your diagram would be *the* BBMG - pressure washer handle instead of the blowgun and 3,000 psi unregulated air from a SCUBA tank, heaven :D What the diference betwen pressure washer handle and blowgun in e...

Is threaded pipe a good idea?

HaiThar wrote:a 1" barrel on a BBMG probably isnt the best idea...

sorry but u dnt uderstand....
there is a barrel .22 or .177 inside of a 1" pipe

Suggestions to design and materials: vortex, diameter of barrel (pvc, cooper).....