MBX "Ultra Max" Replacement Spring for MBX 140MM 2011/1911
*For Use in Conjunction with MBX Ultra Max Follower & MBX 140MM Magazine.
*IS NOT DESIGNED TO FIT ON FACTORY FOLLOWERS OR MAGAZINES
- Spring only
- Must use MBX Ultra Max Follower
*For Use in Conjunction with MBX Ultra Max Follower & MBX 140MM Magazine.
*IS NOT DESIGNED TO FIT ON FACTORY FOLLOWERS OR MAGAZINES