A vertical foregrip for a firearm is structured to secure a nonlethal weapon or compliance device, for example, a commonly available pepper spray canister, therewithin. Some examples of the vertical foregrip may include an attachment that is structured to secure to a commonly available accessory rail such as a Picatinny rail. The vertical foregrip facilitates use of the nonlethal weapon or compliance device while the firearm is being held by the shooter, with the support hand holding the vertical foregrip and activating the compliance device.