4.5mm pellets ammo eh and manufactured an air rifle using a fire extinguisher tank I have a method to make the barrel with a smooth twist the idea is to share practical knowledge of not posting the rifle that is not home to do Use precision tools but I can help with the guns

If you want a rifled barrel, the easiest is to order a spare.

http://sermasports.com/PRODUCTOS/carabinas_gamo/despieces_gamo/0-lista_precios_piezas_gamo.htm

20-30 euros como mucho and a much better result than a home made part.

gracias amigo el problema es que en el lugar donde vivo estas ...

thanks dude has made some gun with rifled barrel? know how make them?

ok thanks one more ¡¡?
stainless steel pipe?
or simple steel?

wyz2285 wrote:400 psi, says in the video

Hi dude 1 quest
is you air cylinder a simple steel pipe? ( sorry for my pronunciation ) you speak spanish? thanks for your answer ( nice work )