Sig Sauer Foxtrot2 1913 Picatinny Rail Weapon Light. The Sig Foxtrot2 features programmable activation with 3 user defined modes; momentary, latching and threshold mode; four interchangeable paddle designs for user-customized activation; four position sliding rail; interface inserts for maximum adjustment range on the firearm. Includes M1913, Sig and Glock sliding rail interface plates for maximum location adjustment range on the rail.