The reality is, sometimes your follower gets messed up, due to age, abuse, sheer use, or maybe you just lost it while cleaning. Whatever the case, high quality replacement GLOCK OEM magazine followers are available. This follower is for .45 Automatic caliber magazines and fits the GLOCK 21, 21SF, and 30, but not the GLOCK 36. Fits newer models that were originally equipped with the 1304-1 and 1304-2 marked followers
Glock Magazine Follower SP01304