Surefire model 618lmg - SureFire Remington 870 12 Gauge Shotgun 6V LED Forend WeaponLight

This integrated light system is awesome, and is super easy to install. It also looks great on my Remington 870 Tactical. I got the model with the disable switch (which helps when transporting/storing), but it can be a little confusing to remember which of the identical buttons on opposite sides is the on/off switch and which is the disable switch.
Pros: High quality, very bright
Cons: Expensive

This review was written in the old system and had content requirements that are different than reviews written today.