BBmg malfunction

Building or modifying BB, Airsoft, and pellet types of guns. Target practice only!
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im currently using the general design of nighthawkinflights bbmg here

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but i have a paintball tank variable of an output from 0-300 psi ive been using a blowgun valve but its limit is 80 psi .are there other small easy to release valves?

p.s.im working on a bolt action rifle but i cant get the bbs to stay in the 6mm barrel how should i fix this ?
p.s.s can a qev work in this rifle situation
Last edited by jrrdw on Wed Jan 08, 2014 4:51 am, edited 1 time in total.
Reason: Fixed video.
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jackssmirkingrevenge
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I've used blowguns up to 450 psi without problems, most of them can take the pressure - the problem is that they get more difficult to open the higher you go.
im working on a bolt action rifle but i cant get the bbs to stay in the 6mm barrel how should i fix this ?
Various options available.

You could sandwich an o-ring in a compression fitting:

Image

You could also drill a hole for a small ball and hold it in place with some sort of spring:

Image
can a qev work in this rifle situation
Yes, it is a cheap and effective valve for a small bore rifle, and can be combined with a three way valve pilot if multiple shots are required.
hectmarr wrote:You have to make many weapons, because this field is long and short life
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how does the trigger system work in the qev 3way pilot valve setup,im out of my area of experience since i do simple pheumatic cannons

i need th air to burst out since it will be a high powered aisoft rifle but i am unsure of a magazine or loading system.i would like this to be semi auto but the main question is aiming
Last edited by jrrdw on Thu Jan 09, 2014 9:46 am, edited 1 time in total.
Reason: Double posting.
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