Ala Carte Glock Gen 1-3 Mag Release upgrade. Alpha Dog will modify your frame and replace the stock small button mag release with our custom made aluminum, large paddle version which resembles the size/shape of the newer Gen 4/5 mag release. Price includes, frame modification, new aluminum mag release cerakoted back and installation. NOTE: This modification will not make your Gen 1-3 frame ambidextrous. It will only upgrade your Gen1-3 frame to a newer styled mag release.