Magpul QDM Heavy Duty Quick-Disconnect Sling Swivel Heavy-duty upgrade to standard push-button quick detach sling swivels; Innovative design allows for a lower profile sling swivel that offers one-handed manipulation High strength bale rotates freely and canalizes sling webbing to prevent rollover Custom quick-disconnect sling swivel for 1-1/4" webbing; Dual side release tabs prevent accidental release Melonite finished steel for strength and extreme resistance to wear and corrosion Combine with MS1 Sling or with MS1 MS4 Adapter; Fits all standard sized QD cups