The ideal open sight for a variety of platforms is a SIG SAUER Romeo3 Reflex Sight. Designed with Picatinny and KeyMod mounts in mind, the miniature, open reflex ROMEO3 withstands the punishment of deployment while delivering pinpoint accuracy and lightning-fast targeting. The proprietary high transmittance red notch reflector delivers excellent brightness with zero distortion. MOTAC motion sensing technology makes sure the 3 MOA dot is there when you draw and shuts down if you forget to save battery life. CNC machined aircraft-grade aluminum housing is lightweight and rugged as well as waterproof and fogproof. SIG SAUER ELECTRO-OPTICS INFINITE GUARANTEE SIG SAUER Infinite Guarantee is an Unlimited Lifetime Guarantee that is fully transferable. There is no time limit, no charge and no receipt required. SIG SAUER will repair or replace your optic in the event it becomes damaged or defective, at no charge to you. If SIG SAUER cannot repair your product, they will replace it with a product in perfect working order of equal or better physical condition. It doesn't matter how it happened, whose fault it was, or where you purchased it. High transmittance proprietary red-notch reflector delivers a bright red dot and zero distortion CNC machined aircraft-grade aluminum housing is lightweight and durable MOTAC motion sensing technology powers up as soon as you draw and shuts down during non-use to save battery life STEALTH ID industrial design uses trapezoidal surfacing to break up the shape and visibility of the sight 3 MOA Red dot reticle with with multiple intensity settings ensures rapid target engagement under a full range of lighting conditions Side-loading battery compartment allows for fast replacement without a need to remove the sight from the firearm Order today!