BCM QD Sling Swivel (Heavy Duty) Why we like these: We're big fans of QD, or "Quick Detach." These are great for slings. They let you add, remove, or reposition your sling quickly. These BCM QD Sling Swivels are made of Carbon Steel, with a Manganese Phosphate finish... MSRP: Was: SALE: $14.50 Add to Cart