Quote:
Originally Posted by HP_Lovecraft  To rig up a rear velocity adjuster (aka RVA), you basically just need to drill a hole into the rear upper plug, then tap some threads. Usually 1/4", or whatever you have handy.
On the other side of the plug, stick a washer between the plug, and spring guide. Then screw in a 1/4" screw until it pushes against that washer. Turning any farther will raise FPS, then backing out with lower. (I think dimes are the right size? I know nickels are the right size in the lower tube)
Much easy to set your FPS while at the chrono then the factory method.
nick |
Uh, wouldn't the screw holding the upper plug in place be in the way?
