Polymer 80 / P80 Magazine Follower for 450 Bushmaster, 458 SOCOM, 50 Beowulf.
You will need to remove the center rib if you are using ammunition that has a ballistic tip on it. If the round does not have a tip and has a flat nose then you may not need to modify the magazine.
These 3D printed followers may need light sanding and could be rough from the printing process, the roughness will not hinder functionality.
Each Follower has been test fitted in this style of magazine to ensure proper functionality.