This spring is AMAZING!!!!!!! When I first got it I had only shot about 1/2 maybe 3/4 of a case through my Legend with the stock spring so I was still getting a feel for the gun. So I switched and at first didn't really notice a big difference. Now 3 months later while cleaning my gun I decided to switch back to the stock spring and HOLY ****!!!!!
It vibrated so much and was so damn loud. I couldn't believe it. Needless to say I immediately switched back to the Rhino spring. Now my gun has about 5-6 cases through it so I'm sure breaking it in has helped but man it's crazy what just a spring can do. I'm incredibly happy with it. If you still don't have it, get it now!
P.s. sorry for the long post, I just had to let the world know lol