1911/2011 Variable power recoil springs.
Using the correct spring can mean faster follow up shots. We recommend anywhere from 5 lb to 9 lb spring for most reduced power 9mm loads. (3gun loads)
We use hash marks, instead of paint, on the end of our springs to indicate spring weight. This is a clean and permanent method to mark spring weight.
It is common for 9mm 1911 guns to come from the factory with a 12LB recoil spring.
(SHOOTING TOO LIGHT OF RECIOL SPRING MAY CAUSE DAMAGE TO SLIDE AND FRAME)