Description FEATURES:-Allows you to rapidly change mags w/out disrupting your shooting pattern-Ambidextrous-Easy to reach-Ergonomic design-Contoured for positive depression & reduced slip PRODUCT SPECIFICATIONS: Dimension     0.85 X 4.30 X 5.15 Height     0.8500 Width     4.3000 Length     5.1500 TYPE/COLOR     EXTENDED MAGAZINE RELEASE/BLK SIZE/FINISH     AR-15/AR-10 MATERIAL     ALUMINUM