ZEV came up with magazine basepad in two colors, red and black. It is a three-piece design that can be easily disassembled for cleaning. It also adds 5 rounds to capacity for 9mm, 4 rounds for .40 S&W
Red:
http://www.zevtechnologies.com/ZEV-Technologies-Glock-Magazine-basepad-Red
Black:
http://www.zevtechnologies.com/ZEV-Technologies-Glock-Magazine-basepad-Black
Price: $44
From: Zev Technologies