*ZONGER this little reflex sight *The red dot sight is suitable for both loom and Picatinny rails*There is only one electronic key switch, which is very simple to operateZONGER this little reflex sight offers a red dot reticle with 4 levels of brightness to work in bright and dim lightinganodized aluminum,Petite, simple and light,Hard and durable, corrosion-resistant, anti-oxidation, long service life