MAGPUL QDM Quick Disconnect Sling Swivel (MAG543)

This is the highest quality sling swivel on the market, in my opinion. The nitride finish is super durable and extremely corrosion resistant, even more so than parkerizing. The unique side release tabs function flawlessly and work both when you push them in to insert the swivel into a socket, or when you pull out of them to remove the swivel. The low profile design is less bulky than traditional button style swivels which is great for end plate QD sockets on AR's. If you're looking for the best QD sling swivel, look no further.