In order to achieve 23rds you may need the help of a loading device. I may take a little break-in time for the spring to set and sit correctly in the tube. Please be patient we have spend many hours developing the sets so we know the capacity with factory spec ammo.

Follower 3D Printed: Our Followers are made from a specific blend of material 2e have developed for this purpose and are 3D printed. If you are against the look or simply the ideal and feel this is not for you than please do not purchase. Remember the facts are MBX has been the most innovative company in the magazine business for Reliability, Performance, Capacity and part of that is Developing Innovative 3D follower Designs that simply can not be effectively molded.

We set out to provide a performance package for factory tubes that would improve reliability, performance, and capacity so you can have it ALL! One Extra Round and supreme reliability of the MBX Follower Design totaling 13 coils and a thicker .052 Spring wire but still achieving better capacity than stock factory magazines. MBX designed and worked closely with the finest spring company Wolff gunsprings to manufacture this product. We have tested it over the past 24 months and are thrilled to release it.