The TA40 hunting set is our 1040 lumen ultra-bright tactical flashlight set, including Shotgun Mount (RM85), Remote Pressure Switch (TS4-L), 2* CR123A batteries and the powerful TA40 flashlight. Using CREE XM-L2 U2 LED, the TA40 delivers up to 1040 lumens and is powered by two CR123A or one 18650 li-ion battery. Patented DUO SWITCH with ?click and tap? function enables the TA40 to use one switch for easy momentary activation and modes switching. The TA40 set fits scope diameter 25.6mm- 30mm and flashlight diameter 20mm- 28mm.