I thought I would share with the Glock world. I recently bought two new G23 magazines. These magazines are the ambi cut magazine bodies with #8 followers. In 300 rounds I have had three FTFeed jams. Two solved with a tap, rack, the other catastrophic. The catastrophic failure was bad. The round jumped out of the magazine and the round under it jammed on the feed ramp. The round above the jammed round on the feed ramp was loose in the pistol. In order to clear it I had to tilt the pistol completely up side down to let the loose round fall out, tried a tap rack, no success, stripped and ripped the magazine and then reinserted. I wasn't happy. I talked to Glock today and they said that the newest G23 magazines should have #8 followers and a #2 on the lower right hand corner of the magazine body on the back, near the Glock logo. I have to bring those in and they will swap them out (I'm 10 miles from Glock, Inc.) I will update when I actually make it over to Glock, Inc. The gentleman I talked to said that they had a few issues with these magazines and the #2 magazine body is the most current. We shall see if that solves the problem.