My first airsoft gun. Semi-auto tightbore 500fps
Posted: Wed Jun 15, 2011 9:32 pm
Well Guys here she is.
My first airsoft gun project. It is semi-auto using the typical QEV and 3 way valve setup.
I have incorporated a power adjustment from low to high power (300-500 fps) By using a ball valve inline with my air chamber, great for choosing between sniping and close combat. Or if you just want to save on air. The propellent is compressed air, I used a paintball 20oz. C02 tank and I pump it up to 1000psi with a Benjamin PCP airgun pump. It uses a paintball gun regulator to drop the pressure down to around 100-120 psi, I can get about 400 shots on high power setting.
For a barrel I originally used a piece of 6mm steel tubing, huh yeah extremely tight bore, turned out to be to tight, every 5th bb would get jammed. So I bought a Madbull Python2 6.03mm tight bore 590mm long barrel. I wish now that I had gone a little tighter like a 6.01mm. But I guess it depends on the bb's you use to. I am using 25g 5.95mm bb's which are a little loose in the barrel, but it still shoots accurate, and very straight thanks to the hopup. I estimate that it shoots around 200feet, about 175feet before the bb starts to fall.
Now all I have to do is figure out what I'm going to do about a clip and sights.
My first airsoft gun project. It is semi-auto using the typical QEV and 3 way valve setup.
I have incorporated a power adjustment from low to high power (300-500 fps) By using a ball valve inline with my air chamber, great for choosing between sniping and close combat. Or if you just want to save on air. The propellent is compressed air, I used a paintball 20oz. C02 tank and I pump it up to 1000psi with a Benjamin PCP airgun pump. It uses a paintball gun regulator to drop the pressure down to around 100-120 psi, I can get about 400 shots on high power setting.
For a barrel I originally used a piece of 6mm steel tubing, huh yeah extremely tight bore, turned out to be to tight, every 5th bb would get jammed. So I bought a Madbull Python2 6.03mm tight bore 590mm long barrel. I wish now that I had gone a little tighter like a 6.01mm. But I guess it depends on the bb's you use to. I am using 25g 5.95mm bb's which are a little loose in the barrel, but it still shoots accurate, and very straight thanks to the hopup. I estimate that it shoots around 200feet, about 175feet before the bb starts to fall.
Now all I have to do is figure out what I'm going to do about a clip and sights.
