You need a cartridge type laser to sight in - Crimson Trace Ruger LCR/LCRX Green Lasergrip

CT says the grip laser is sighted @ 50 ft. to the gun sights. The front sight on the LCR is too tall which tilts the bore downward. I found this true of both the 38 spl & 9mm. A Sightmark laser cartridge in the cylinder will project a line about 3 feet BELOW the grip laser at 15 yards (45 ft). You cannot use the gun sights. You will also find some variation from cylinder to cylinder up/down & left/right on the order of zero to 4 inches. The drill pattern is never perfect on a revolver and individual holes can vary in diameter and placement. I adjust the laser grip so variation from hole to hole is minimal.The grip ergonomics and activation are excellent.