MINIATURE TACTICAL FLASHLIGHT Notice: Due to the intricacy of this item, it is sold as a decorative prop.  We keep the quality check high but cannot guarantee that your mini tac light will function. There are no refunds or free replacements for this product.   About Fits all AR, M16 quad railing 100% diecast metal 1 1/2" Long x 1" Wide (including mount) Upon receiving, pull off the light plastic part carefully to reveal button. Push button in to turn on light.