ProMag Industries Sling Plate, Single Point Sling Attachment, Ambidextrous, Black PM140A The ambidextrous single point sling attachment plate replaces the collapsible (4 or 6) position butt stock retaining plate. The sling attachment plate allows the use of a single point sling to be attached to the plate utilizing a hook-type fastener through the provided loops. The plate allows the weapon to be worn on both the right or left side. Constructed of carbon steel with a black-oxide finish.