Shadow Systems Subcompact 10 Rounds Pistol Magazine w/Follower, Black, 10, SG9S-00-56B

Add this to your stock 10-round magazine to take the capacity to 11 rounds. The basepad is contoured to create a rest for your pinky. In addition to getting an extra round you will get more control over the pistol. The +1 basepad is slightly bulkier than the pinky extension.