My Custom QB78

I finnished this build last winter (November/December) and have been asked to post some more info. So here it goes.

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Mods:
Custom Stock
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The stock started out as a AR2078A stock stripped right down, I made the finger grooves for the trigger hand and the relief for the forestock and sanded to 220 grit finnished both grips with Duracolor truck bed coating.

Trigger & Hammer Assembly:
Polished all surfaces and adjusted for a light crisp trigger pull. I'm using the origional hammer spring.

Custom HPA Valve:
The Valve is a custom made piece from Ultimate QB Tunes, made to run on HPA, with a teflon valve stem.

Main Tube:
It uses the origional main tube with a Mac1 extended tube for more capacity. Also uses the QB bulk fill adapter. The barrel band is a RJMachine band.

Bolt:
I have polished the bolt and opened up the inlet as well as the outlet for maximum flow.

Barrel:
The barrel has been crowned and now shoots ~ .25" groups @ 40-50 yards.

Scope:
The scope (not the one in the pics) is a 3-9x40AO I.R. R-G Mildot by Leapers.

It now shoots low 910fps with 14.3gr pellets with a 1400psi regulator on a 22ci bottle from JDSAirman.

Thanks
Jeff