ProMag Extended Magazine Base Pad +4 for Springfield XD 9mm, 357 Sig, 40 S&W Polymer Black

The ProMag extended base pad will increase the capacity of your XD pistol. The base pad will increase the capacity of 9mm luger magazines by 4 rounds and 357 Sig & 40 S&W magazines by 3 rounds. Replaces the factory base pad. Constructed of durable black polymer.