Outstanding springs
I have six Brownells 10 round 9mm magazines for my Ruger SR1911. The original springs and followers were simply not getting the job done. I decided to take a chance on these springs along with the TR followers. Man, I'm glad I did! I am very pleased with the results and 14 bucks a mag beats shelling out $30 a pop or more for new mags. The springs are a bit tight for the last couple of rounds, but I think they will loosen up with some range time.