FIRECLUB 2017 Universal Tactical Pistol Scope Sight Polymer Light Weight Mount With 7/8" Weaver & Picatinny Glock 17 5.56 For s&w/1911/Glocks/Walther p22/HKp30/SD9VE 9mm Go to amazon.com Related posts How to buy the best universal picatinny rail mount? FeatureMaterial: High Quality PolymerType: 7/8" 20mm Picatinny/WeaverUpper with 7 slots ,other with 3 slotsFinish: Matte black Finish DescriptionMaterial: High Quality Plastic As far as we know, it works with s&w/1911/Glocks/Walther p22/HKp30/SD9VE/Kel Tec PMR 30. etc.