These mags are excellent. They are a better design than the factory SP-01 mags. They insert and release better than factory. They also are designed with cutaways on the front corners to allow squared hollow point tips to feed smoothly. The factory mags are rounded on the front corners and can actually impede the feeding of some hollow points (i.e. Hydra Shok). The price beats everyone I have found as well.

These mags are great. Bought 2 and just went through 500 rounds, they work just as good if not better than OEM!
Great Price!!!

Just bought two of these. Magazine is every bit as good as OEM (which I think they are). I'd rate this mag as a top of scale product. Price is good too.