Never be without a backup battery again! Perfect for every day carry. Whether you're on the road, at work, or out at the range, rest easy knowing that you always have a backup battery for your optic! Fits 3 different battery sizes: CR2032, CR1620, and CR1225. *Batteries Not Included Optimized feed ramp angle for reduced “Speed Reloads” No added print signature for EDC Eliminate debris from entering into your pistol through the frame cavity Little or no weight added for EDC Approved for use by the USPSA Rules Committee! Speed Feed EDC - Backup has two models: Fits Gen5 GLOCK G19 sized frames - weight .2 oz Fits Gen5 GLOCK G17 sized frames - weight .3 oz