The Pearce Grip Magazine Base Pad for the Glock 42 replaces the magazine floor plate providing one extra round of capacity and approximately 3/4" additional gripping surface for better control and comfort while also incorporating the factory texture pattern.FeaturesAdds one extra round Provides additional gripping surface for pinkyDirect replacement for factory mag floor plate DISCLAIMER: This product is not manufactured, authorized, endorsed, or warranted by GLOCK. GLOCK does not warrant or represent that this product is compatible with GLOCK pistols.