Pachmayr's 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 polymer that stands up to the roughest handling.This model is compatible with glock g26/27/33/39.It converts g26 to 12 rounds, g27 and g33 to 10 rounds, g39 to 7 rounds.Caliber: Multi-CaliberCapacity: Adds 2/Adds 1Finish: BlackModel: Grip ExtenderMaterial: PolymerType: Grip ExtensionModel Fit: G26,27,33,39Brand Fit: GlockCapacity: Adds 2/Adds 1