The Leupold aerospace-grade aluminum DP Pro AR mount brings the red dot to just the right height without adding a ton of weight or bulk. It's ideal for AR pistols for lightweight builds where every ounce matters. Fits any picatinny rail. Made in the USA. Guaranteed For Life Lightweight aluminum housing Motion Sensor Technology (MST) Punisher Tested Scratch Resistant Lenses Shrouded in rugged stainless steel Ultra-Lightweight Design 100 percent Waterproof and Fogproof Dimensions: (LxWxH) 1.82? x 1.31? x 1.30? (46.1mm x 33.2mm x 33.0mm) Sight window: 25.7mm x 17.5mm; 1.01? x 0.68?