Bought a S&W .38 three or four years ago that came with a Crimson Trace laser sight on it. Had real good luck with it & haven't changed batterys yet. So, I needed a fore grip & wanted to try a laser. Bought a Crimson Trace AR-15 Virtical Forend Grip. MAN, IS THIS THING HOT!!!! Sighted it in at 50ft., it will shoot out an 1" circle from the hip every time I test it, it can be seen on target in full sun light. Can be seen throught Aimpoint M4 like it is turned on. Not so good with EOTech,I guess lense coating on EOTech washes out the laser.