USGI Magpul corps Mag modifications for Reliable feeding. USGI Almost as good as a PMag?

Magpul Followers: https://rover.ebay.com/rover/1/711-53200-19255-0/1?icep_id=114&ipn=icep&toolid=20004&campid=5338045473&mpre=http%3A%2F%2Fwww.ebay.com%2Fitm%2FMagpul-110-Self-Leveling-Enhanced-Follower-For-5-56-Magazine-Yellow-3-Pack-%2F311748397067%3Fhash%3Ditem4895a7080b%3Ag%3A6JgAAOSwImRYOKf6
(affiliate Link shown above)
Simple non-permanent mod to improve the feeding of your USGI magazines. Did this while serving in the Marines, and saw no Jams. While everyone else was jamming up, I was sending rounds down range. Very nice product