I've been running them myself. As with any makers mags, I always take them apart, clean the interior good, check the bend on the follower legs (have had a couple the I bent inwards a bit as they were dragging on the mag body fairly good, and then when I reassembly I always use a skinny long bladed screwdriver to make sure that I have the spring coils above the dimple in the body. I have had no issues with any of the mags I have run. You might find they are a little stiff on insertion as well, but working them in and out a few time (stay on track here fellas), slicks up the Parkerizing and makes it nice very quickly.