Agency Arms Magwell Glock 17 Gen3 Black. It is machined from 6061 Aluminum and MIL-A-8625 Type 3 Hard Anodized. It has a streamline design which positions the hand higher up into the firearm and also provides a small funnel to aid in reloads. May require slight fittong on reduced capacity magazines and stippled frames. Specifications for Agency Arms Magwell Glock 17 Gen3: Manufacturer: Agency Arms Color: Black Fabric/Material: 6061 Aluminum Gun Make: Glock Gun Model: Glock 17 Model Generation: 3 Included Accessories: 2 Allen Wrenches 2 Steel Fasteners and Grip Plug Condition: New Features of Agency Arms Magwell Glock 17 Gen3 Material - 6061 Aluminum Coating - MIL-A-8625 Type 2 Anodize Color - Black Compatible with the following Gen 3 models: G17/G17L/G22/G24/G31/G34/G35 Package Contents: Agency Arms Magwell Glock 17 Gen3 2 Allen Wrenches 2 Steel Fasteners and Grip Plug What firearm models does the manufacturer say Agency Arms Magwell Glock 17 Gen3 is compatible with? The manufacturer suggests that Agency Arms Magwell Glock 17 Gen3 is compatible with Glock 17Agency Arms 25MW-G17G3-B Magwell Compatible With Glock 17 Gen3 6061-T6 Aluminum