I’ll second the Vickers sling. Pretty much any Blue Force Gear product, Magpul ( theirs slide very nicely while adjusting ), and Endomm.
If you’re old, out of shape, or have bad shoulders, you may want something wider than the Vickers, or even the padded Vickers. The Endomm is a bit wider at contact points and is very comfortable without being padded.
There are hundreds of choices, most are the same thing. If you can get your hands on a couple at the local shop before buying it may save you from having “extras” in your gear locker.
If you’re still young, young-ish, solid, and have good shoulders buy anything Vickers or Magpul sling and save yourself the trouble of getting 40 pages deep in researching it.
As far as hooking it up to the weapon goes, I personally hook the sling up directly to a hard loop on the forearm ( Magpul angled loop ) with no QD and have a QD on the buttstock in case I need to remove it. There are as many ways to hook it up as there are choices of sling. Every time I think I’ve settled into how I want it I end up changing something.
Another fan of BFG slings here.
I like that the design has the quick adjustment slider that doesn't leave all sorts of dangly bits unlike some others.
As for padded vs unpadded, the padded sling will limit the slider's range, so if that's important, get the unpadded (FWIW, I don't have any issues with the slider range on the padded slings going from snug, to loose enough to mount weakside, but some may prefer being able to go from super snug, to super loose).
As far as comfort goes between padded vs unpadded that really is an individual thing and all depends on the firearm's weight and how conditioned your shoulders are to the pressure (not to mention things like thicker vs thinner clothing, plate carrier/body armor etc.).
I like Midwest Industries recessed QD swivels. Still has the QD ability, but just about zero chance of the button accidentally being pushed and dropping an expensive rifle on the expensive optic.
BTW, I tried Magpul's QDM sling mount because the concept seemed great. The execution
sucks though. The
concept was that as opposed to a push button QD, you had sliders on either side that you pulled simultaneously to release the QD (as opposed to pushing the button on regular push button QD mounts, while simultaneously having to grab and pull the mount out of the socket).
In theory, the QDM is supposed to require pulling the sliders on both sides simultaneously (using a simple pinch grip) in order for it to detach (thereby eliminating the possibility of an unintentional detach from snagging on gear etc., since a gear snag would only snag the slider on one side). When I tested them though, they could and would detach from just one slider being pulled, which can easily happen from a gear snag (and would potentially happen much more easily than with a push button QD). Returned them immediately.
