AT3 Tactical Ambidextrous AR15 Safety Selector Blue. This two-piece safety is of made of precision-machined heat-treated steel with grooved machine marks for secure grip in all conditions. The selector features a lever on the left side connected to the steel drum and a right side lever secured with a button-head screw. Easily installs in minutes. Includes 2-piece safety selector machine screw and allen wrench. Want a little more color than standard black? Choose from any of colored Cerakote finishes Specifications for AT3 Tactical Ambidextrous AR15 Safety Selector: Manufacturer: AT3 Tactical Gun Make: AR Platform Gun Type: Rifle Gun Model: AR-15 Fabric/Material: Steel Hand: Ambidextrous Condition: New Features of AT3 Tactical Ambidextrous AR15 Safety Selector Mil-Spec dimensions Fits AR-15 Package Contents: AT3 Tactical Ambidextrous AR15 Safety Selector What firearm models does the manufacturer say AT3 Tactical Ambidextrous AR15 Safety Selector is compatible with? The manufacturer says that AT3 Tactical Ambidextrous AR15 Safety Selector is compatible with AR-15AT3 Tactical SS-AMBI-01-BLU: Ambidextrous AR15 Safety Selector Blue