I just pulled apart a clicker pen and basically coil binded itThinking about doing this myself as well for IDPA.... So, any suggestions on a spring I could pick up from Ace hardware? I see Dan recommends a 1911 mag release spring, but I don't have any spares.
Update... went by Ace and bought a spring. Installed a few minutes ago. Dan's tutorial is perfect. It took maybe fifteen minutes and that's only because I'm so skittish working on guns.