Bravo Company Picatinny Rail QD Sling Mount, Quick Detach, 1913 Rail, Black BCM-RSM-1913 Bravo Company's BCMGUNFIGHTER 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.