AT3 Tactical Mil-Spec AR-15 Magazine Catch FDE. Steel construction with proper threading and dimensions plus a durable Melonite finish to lasting wear protection. If you ended up magazine catch that isnt doing the job this is a perfect replacement. Its also available in 6 other colors as durable Cerakote finishes FDE ODG Pink Gray Blue and Red. Consider pairing this with AT3s Mil-Spec Magazine Catch Button Specifications for AT3 Tactical Mil-Spec AR-15 Magazine Catch: Manufacturer: AT3 Tactical Gun Make: AR Platform Gun Model: AR-15 Fabric/Material: Steel Gun Type: Rifle Condition: New Features of AT3 Tactical Mil-Spec AR-15 Magazine Catch Mil-Spec dimensions and function Black Melonite finish or 6 colored Cerakote finishes Fits AR-15 Package Contents: AT3 Tactical Mil-Spec AR-15 Magazine Catch What firearm models does the manufacturer say AT3 Tactical Mil-Spec AR-15 Magazine Catch is compatible with? The manufacturer says that AT3 Tactical Mil-Spec AR-15 Magazine Catch is compatible with AR-15AT3 Tactical AT3-MC-01-FDE: Mil-Spec AR-15 Magazine Catch FDE