Had a chance to test out the CT LG-431 at the range today. Took a few minutes and 20 rounds to sight in the laser. The LG-660 on my M&P and S&W snubbie were just about dead on right out of the box. This one took some work. Probably due to the trigger guard mount configuration. So far I'm pretty pleased with the 431. It was easy to install. No batteries for life rebate in the box. Darn!