no longer comes with the mainspring.
Volquartsen removed it to ensure reliable ignition. Also,
When installing the kit in a 22/45, it'll be
to use the factory sear spring as the 22/45 sear spring
is a different shape than the Mark II sear spring that is
in this kit. The resulting trigger pull will still
Average Customer Rating
Number of Raters: 1
Huge improvement. If you can disassemble your MK2, you shouldnt have a problem installing. Find the youtube vid from volquartsencustom, otherwise its kinda tough. Guy on vid took 6 minutes, took me a good bit longer.