Air Venturi Avenger Plenum Thread Size ?

I want to machine a one off external plenum for my .22 Avenger and wondered if anyone knows the thread size of the plug with the bleed screw in it? I could tear it down and measure but I was hoping someone could tell me so the gun stays assembled while I perfect the design on the computer.
I will not offer any for sale so don't worry about me competing with anyone who does.
 
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Just go get one from AE Swede. It's a nice piece at a very reasonable price! The 7075 aluminum it's made out of is a monster took me 2 hrs to drill a bleeder hole.
I think you have a dull drill bit my friend. 7075 is one of the strongest aluminum alloys but a drill bit should go through it like butter. I machine and drill it often. A.E Swede's plenum is only 10cc for ease of manufacture.
Awesome avatar!