The Sling thing is a simple way to carry your long gun. 
Being low profile with just a single webbing strap and easy to use adjustable hardware, there will be no thumbling about trying to get your rifle ready and into action. 
The Sling thing gives you the ability to cinch down the long gun tight to your body, allowing you to complete admin, run around and let those arms rest without it hitting those private areas. 
Alternatively you can adjust the Sling wider, allowing for you to properly manipulate your weapon without the chance of strangling yourself.(we know, some of you out there might be disappointed that this Sling won't strangle you)
Includes one Snaphook
Made with Western materials and all Milspec.
Milspec 25mm webbing
Spring loaded cam 
ITW hardware