Pachmayr Grip Extender Magazine Base Pad +3 Fits Glock 26, 27, 33, 39 XL Polymer Black Package of 2

Pachmayr’s new Grip Extenders will greatly increase your control and shooting comfort when added to popular compact and sub-compact handguns. The extensions perfectly match the shape and texture of the handgun, so they look like they are part of the pistol, rather than an add-on. Extenders are easy to install (simply slide the base plate on, slide the extender down the magazine, and tighten it down). The grip extenders are made of tough, high strength polymer that stands up to the roughest handling. 

Notes:

This XL version converts the Glock 26 to 13 rounds and Glock 27 & 33 to 11 rounds.