QB79 HPA build for GTA member

[Buldawg76]

Got it and yea that would work quite nicely and allow for spring adjustments and a SSG as well and fix the missing butt stock that seems to have been decapitated by accident in a moment of uncertainty.

It should look good but are you still going to have the action in part of the left over wood stock for a forearm and pistol grip or just go bare framed for the skeletonized look.

Mike

[imadunatic]

Jason/Chris,

Any long term issues with the hour-glassed valve stem?

[nervoustrigger]

Slimming the stem is a technique that has been used on many different pneumatics with a knock-open valve.  For example, it's a popular modification with Crosman guns...MSP, PCP, and CO2 types alike.

I've never had a stem to fail.  For example, mine has probably 7000 pellets through it and is still going strong.

I'm sure it could be a problem if carried to the extreme but taking it from 0.118" down to 0.080" or so is fine. 

[UCChris]

Mine had at least the same 7000 or so pellets. Still functions flawlessly.

[imadunatic]

Great to know,  thanks guys. I'm adding it to the list.

[grand-galop]

Any update on this build???  I taught it was ADEQUATE to bring it back to life since there is so many questions that can be ansewred with this topic...