Pachmayr 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 and are made of tough high strength Compatible with Glock G26/27/33/39 and adds 3rds 0.25″ of gripping surface.