I had traded for a discovery rifle a few years ago and never got around to doing anything with it. Had a lane reg for a disco so decided to throw some stuff together. I replaced the valve inlet and gauge block with a one piece bored out gauge delete for max plenum without using a standoff. Small tube so want to use it all. Made a new higher flow poppet head from delrin and repurposed an old 3mm HSS tap to make a new high flow stem. oring in the rear of the valve makes sure there's no blow by. Bored the hammer and end cap to 3/8" and deep enough to keep a 2" stiff spring with no preload. This will help with debounce. 3000psi screw upgrade from magnum air. Set the reg at 1400psi and on a 3000psi fill I'm 28 shots at 910 with JSB 10.34. 
