Green laser - Streamlight TLR-4G Compact Tactical Light

Bought this Laser/Light for use on the new Ruger American pistol I recently bought. Keys provided with light result if perfect fit to gun's rail. Green dot shows up well on target at ten yards in bright sunshine. Had difficulty finding it at 25 yards but only tried briefly to do so. Used light/laser combo setting at night recently. Lit up my surroundings as if it was mid-day and green dot was easy to locate. This set up gave me quick target acquisition. Easy to use adjustment screws brought me on target very quickly. Switch for turning unit on remained in place after fifty rounds and I don't anticipate any issues. I recommend this unit.