Introducing the Strike Industries Gen. 3 Magwell for GLOCK 17! SI's Gen 3 Magwell was designed to provide easier reloading of the magazine while adding a stylish look. Compatible with most aftermarket magazine base plates and extensions. (Also compatible with G22 / G31 / G34) *Not compatible with backstraps installed on the GLOCK frame. Features : Unique design for tight fitment Improved Funnel Geometry for Easy Reloads Durable Polymer Construction Compatible with Strike EMP System's Form and Function GLOCK is a registered trademark of GLOCK Inc. 3CR Tactical is not affiliated with, endorsed by, or sponsored by GLOCK Inc. Any reference to GLOCK products is for identification and compatibility purposes only.