Reptilia Black Hole Polymer Magwell for Glock 19 Gen-3/4 Black. Included Accessories: All Mounting Hardware Included Specifications for Reptilia Black Hole Polymer Magwell for Glock Gen-3/4: Manufacturer: Reptilia Color: Black Fabric/Material: Polymer Gun Make: Glock Gun Model: Glock 19 Gen 4 Glock 19 Gen 3 Model Generation: 4 3 Included Accessories: All mounting hardware is included Condition: New Country of Origin: USA Package Contents: Reptilia Black Hole Polymer Magwell for Glock Gen-3/4 What firearm models does the manufacturer say Reptilia Black Hole Polymer Magwell for Glock Gen-3/4 is compatible with? The manufacturer says that Reptilia Black Hole Polymer Magwell for Glock Gen-3/4 is compatible with Glock 19 Gen 3 Glock 19 Gen 4Reptilia 100-005: Black Hole Polymer Magwell for Glock 19 Gen-3/4 Black