the air flow restriction in the bolt is one of my main concerns. i have limited access to materials do to the fact i live in rural alaska. i do not like to use any other materials than brass, aluminum, steel, copper, and that teflon stuff ( the name excapes me) i obtain my materials by recycling. th...

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hey there everyone! idk bout you guys but i love co2/ air powered paint grenades & mines. just recently i rigged one of my own personal designs in a 10'x10' room and completely changed the color scheme. lol these things can be lethal if not built correctly with the right materials & pressure specs. ...

her is my concept design of a blow forward catridge firing air/co2 rifle that i finished last night. this particular design will allow to have 70% of the length of the rifle to be barrel. it comes in handy if your buiding a carbine and/or rifle that has high accuracy. feel free to post any comments,...

i was thinking about a low pressure valve at the end of the piston rod and using it similar to a relay to then activate a high pressure valve to then cycle the bolt and cock the the striker for firing

i am open to more efficient designs. the rifle it self isnt designed to normally fire paintballs. its more that if i want to do so, all i have to do is load the magazine with that particular ammunition. i would like to do something similar to the DBB system ( double barrel blowback) used in traditio...

i am building a semi auto 15.5 mm co2/ air rfle. the design peramiters are built with hand tools, purely mechanical operation, variable pressure, reliable and field strippable. ( i am well skilled at hand making very complex parts) i have been looking at the blow forward design but i am having troub...

i need help on the lp/hp pressures for the piston and any knowledge in this area. thanks