In this Instructable, I will show you what you need to assemble a tactical light for your air soft gun, for under $10.
LED light from Harbor Freight (http://www.harborfreight.com/3-1-2-half-inch-nine-led-flashlights-2-pack-97036.html or http://www.harborfreight.com/35-inch-9-led-mini-flashlight-65020.html) Look for cupons that let you get these for FREE!!!
1 inch Weaver style scope rings. Any 1 inch ring will work, high or low profile. I am using NCStar rings (http://www.airsoftgi.com/product_info.php?products_id=9972)
Automotive cell phone charger or cable with 2 wires in it or two wires in heat shrink.
Thin piece of plastic (credit card)
Heat shrink tubing
Stick on Velcro
Electrical tape or Scotch tape
Wire strippers and cutters
Screw driver and allen keys