Grip sleeves for firearm grips are disclosed. The grip sleeve may include a hollow body formed of an elastic material. The hollow body may include an inner contact surface configured to be placed around a grip of the firearm, and an outer contact surface surrounding the inner contact surface. The grip sleeve for the firearm may also include a ridge portion extending from the inner contact surface into an interior space of the hollow body. The ridge portion may extend along a height of the hollow body.