This is the first time I've mounted a light on a shotgun. I ordered the SureFire 6v Led Tac Light (618LMG) for my Remington 870 Tactical. Installing the light was easy with the tool they included. Although the first time I put it on the forend rubbed against the barrel. I reinstalled it and now it works perfectly. I must not have tightened it correctly. The controls work good and the light itself is powerful. The cost is the only downside. Surefire products are expensive, but I don't know of any other products like this.
Pros: Very Bright, Durable, High quality
Cons: expensive
This review was written in the old system and had content requirements that are different than reviews written today.