Webmar 2, 2023 · my only issue is when i'm using the 13 round magazine and it is fully loaded. For whatever reason, the magazine takes a great amount of force to lock into place. Webaug 7, 2021 · this video is spot on for correcting the hard to load 13 round magazine problems. Out of 4 13 round magazines i have for my shield pluses, 3 of the 4 would. Webdec 9, 2022 · for anyone with a m&p shield plus who can't get 13 rounds into their mags…