Crimson trace universal green laser - OpticsPlanet 5 Dollar Gift Certificate

Although the Armalite sight did not fit what I wanted to put it on, the Crimson Trace universal fit sight works like a charm. The green laser is very visible in a dark room, even to the point of a visible beam reflecting from airborne dust particles. The dot is bright even in full daylight. Had little bit of a delay in shipping, hence the four-star rating. There was no problem with the first-purchase return and refund.