Sig P320 9/40 "Competition" base pads are CNC machined with a new unique traction pattern for fast reliable magazine reloads. They are great for USPSA Production or Carry Optics divisions or other applications. These base pads lengthen the magazine .375" and work great with magwells. They do not add capacity to the magazines.     1.1 OZ

*Will fit New style magazines with a square-style locking floortab/basepad. *

*Not for the 21rd 9mm/18rd .40 factory mags, please see SP0218 for a basepad for those mags.

*Compatible with all Springer magwells and  Sig Factory X5 magwell*

*Not compatible with flanges that fold into the magazine body*