Strike Industries Glock Magazine Release Glock Gen4 Titan One Size. Included are two push buttons that are easily interchangeable. Both button faces are CNC milled from 6061 Aluminum with mag release internal mechanism made from high density polymer that provides smooth ejection. Specifications for Strike Industries Glock Gen 4/5 Modular Magazine Release: Manufacturer: Strike Industries Gun Make: Glock Gun Model: Glock 27 Glock 33 Glock 34 Glock 17 Glock 22 Glock 19 Glock 39 Glock 19X Glock 45 Glock 26 Glock 37 Glock 32 Glock 31 Glock 23 Glock 35 Glock 38 Model Generation: 5 4 Fabric/Material: Anodized Aluminum Polymer CNC Milled from 6061 Aluminum Condition: New Features of Strike Industries Glock Gen4 Magazine Release Includes two interchangeable button heads Aggressive texturing on push pad to prevent slippage Hybrid design with anodized aluminum and polymer body bar Main body designed with polymer to minimize wear and tear on magazine retention cut-outs and polymer pistol body Package Contents: Strike Industries Glock Gen4 Magazine Release 1 x Mag Release (polymer) 1 x Mag Release button 1 (aluminum) 1 x Mag Release button 2 (aluminum) 1 x M2 Screw What firearm models does the manufacturer say Strike Industries Glock Gen 4/5 Modular Magazine Release is compatible with? The manufacturer says that Strike Industries Glock Gen 4/5 Modular Magazine Release is compatible with Glock 19 Glock 23 Glock 31 Glock 32 Glock 26 Glock 37 Glock 27 Glock 33 Glock 38 Glock 39 Glock 17 Glock 22 Glock 34 Glock 35 Glock 45 Glock 19XStrike Industries SI-G4-MAGRELEASE-TITAN: Glock Gen4 Magazine Release Titan One Size