Abstract: A firearm sling keeper comprises a channel member which completely encloses a small segment of the doubled sling strap and is fixed to the stock of the arm by means of conventional sling swivels at the toe of the butt stock and toward the muzzle end of the stock forearm. The sling strap is free to move longitudinally through the channel member in response to a shift of the center of gravity of the slung firearm. The exterior surface of the channel member opposite to and facing the stock forearm has a large number of small plastic hooks, comprising one-half of a Velcro-type fastener. The mating eye portion of the Velcro-type fastener is located on a fabric and/or plastic patch which is detachably mounted to the user's garment by means of a lockable pin device or fastener secured firmly to, or incorporated into, the patch.