i use rechargeable olights just because they use same cord for any of its lights so i do not have to get into a mental stupor on what device got what cord and where to find it.Bipod arriving tomorrow for AR-10. Now I'm looking at weapon lights. The cloud defense rein 3.0 style seems like it would work. $400 seems a little steep though. With the bipod up up front I'll probably mount light on side rail and pressure switch up top? This would be for the AR-15 not AR-10.