ravo Company's BCM Gun Fighter's Picatinny Rail Quick Detachable Sling Mount fits standard 1913 Picatinny Rail interfaces. Accepts standard QD (quick detachable) push button sling swivels (not included) and has a non-rotational locking interface.Specifications and Features: Bravo Company Manufacturing USA BCM-RSM-1913 AR-15 RSM (Rail Sling Mount) Accepts standard QD (Quick Detachable) push button sling swivels (not included) Non-Rotational locking interface Requires two lugs and one 1913 slot to mount properly All Steel Construction Made in the USA Matte Black