JL Billet Aluminum AR Magazine Release Button Black. Machined from 6061-T6 to match the ambidextrous switch this billet mag release is slightly elevated to give a solid feel for quick mag drops. Finished with Type III Hard Anodize. Specifications for JL Billet Aluminum AR Magazine Release Button: Manufacturer: JL Billet Gun Make: DPMS Gun Model: AR-10 AR-15 Color: Black Finish: Type III Hardcoat Anodized Fabric/Material: 6061-T6 Aluminum Gun Type: Rifle Weight: 0.01 lb Additional Features: Ambidextrous Switch Country of Origin: USA Features of JL Billet Aluminum AR Magazine Release Button AR15 AR10 AR Magazine Release Package Contents: JL Billet Aluminum AR Magazine Release Button What firearm models does the manufacturer say JL Billet Aluminum AR Magazine Release Button is compatible with? The manufacturer suggests that JL Billet Aluminum AR Magazine Release Button is compatible with AR-15 AR-10JL Billet JLB-MAG-RLS-B: Aluminum AR Magazine Release Button Black