Outstanding operation
There is a noticeable difference in this spring from other brands. The coils are treated and have a silky response through the loading of the magazine. In swapping out the spring in another brand magazine I noticed the follower just rides smoother. I didn’t have to remove any rough or sharp edges, and the spring appears to be designed for the collapse on 30 rounds. Of course it runs better on 28 or 29, but it has a full follow through. Also not noisy. Doesn’t sound like it came back from a certain desert and wasn’t cleaned