I prefer a single point sling for a hunting carbine(6.5 Grendel). I use a MagPul ASAP plate/ mount and a MagPul MS2 sling. I have yet to pick up a MS3 but I'll get to it one of these days. The set up is simple comfortable. The carbine hangs center of the chest while glassing, it's at the ready for immediate use and you can break your carbine free of it with one simple pull of the "Bail out" cord.