Great Lakes Firearms Striker Compact Frame 9mm Luger 15+1 4" Black Nitride Steel Barrel, Black Cerakote Serrated w/Slide Cuts Steel Slide, Bull Shark Cerakote Polymer Frame & Grip, Ambidextrous The Great Lakes GLFA 19 Striker 9mm compact features a polymer frame, optic ready RMR compatible ported slide w/front & rear slide serrations, compatible with Gen3 parts, ambi-magazine release, Cerakoted Bull Shark frame and 4" barrel. Includes 15rd Glock compatible magazine.