Glock 50431 Modular Magwell G17 34 Gen5 G45 Black Polymer. Specifications for Glock 50431 Modular Magwell G17 34 Gen5 G45 Black Polymer: Manufacturer: Glock Color: Black Fabric/Material: Polymer Gun Make: Glock Gun Model: Glock 34 Gen 5 Glock 17 Gen...