I have used different ACT-MAG magazines over the years and have always found them to be of the highest quality. These, for the P320, are no different. I'm very pleased with the way they function.
Fantastic magazines. I ordered several for use at the range, as these are significantly cheaper than factory mags. I find I have trouble getting the 17th round in, but it does hold 17. I've ran these magazines in several high intensity drills, in mud, in dirt, and they perform flawlessly. Not a single malfunction in over 1000 rounds. Definitely getting more.