IRON JIA'S Optics Tactical Compact Red Dot Laser Sight for Pistols with 1.75-Inch mounting Clearance Front Weaver/Picatinny Rail Red Laser sight for Pistols or rifles.Class 3R (2mw) Wavelength: 650nm, Power: &lt;1mw100m. Size: 32mm x 26mm x 26mm, Mini Style. Use on real fire and air pistols along with rifles. Comes with detachable Picatinny Rail. (without LR44 button cell batteries) Product parameters