This Wadsn Torch is great for airsoft and comes with a pressure pad switch that will fit straight on to a 20mm rail.

Features
• Battery not included - CR123 required
• Weather proof
• High strength aluminium
• High Output Cree-XPE-R5 280lumes
• Picatinny Rail Mount
• Includes pressure switch
• With Dual Function Tape Switch: Momentary-on pressure pad contains Long and short switch