The Caspian base pad listing carries the MBX Extreme Basepad for Caspian and Tanfoglio styles. USPSA Open and Limited shooters running Caspian or Tanfoglio-pattern magazines use it to set magazine length and reload profile, and it pairs with MBX Extreme Caspian/Tanfoglio tubes, which are designed to work with MBX base pads. Confirm your magazine tube and pattern before ordering to ensure a secure fit. Fast same-day shipping on most orders at Shooters Connection.