A vertical foregrip pepper spray device is taught which consists of a hollow body having a base with an internal fluid conduit incorporated therein. The device has a picatinny rail female groove and a thumb opening containing a covered safety mechanism in the top portion. A pepper spray pressurized aerosol container is inserted within the hollow of the body and latched in place, such that an operator may safely discharge a non-lethal chemical irritant spray by manually depressing the top surface of the pressurized aerosol container. The device is removably mounted, with a quick release assembly, onto a picatinny rail positioned on the forearm underside of a modern sporting rifle or long gun.