I bought 5 Chip McCormick Shooting Stars after the purchase of my Kimber Custom Classic a few years ago. To this day, I am thoroughly satisfied with these magazines. The appear to be well made and they've yet to malfunction in any way.
The only vice I've found with these particular mags is the fact it cannot be stripped for cleaning. I understand the recent manufacture ShootingStars can be.
Overall, I am pleased.