I have a similar question. I recently purchased a CUV stock (choate ultimate varminter) for an S110 rifle build/upgrade that I've been working on (but it is currently stuck in a holding pattern). At the front, there is a stud on the bi-pod rail, under the forearm. I do have a bi-pod mounted, and the front end of the sling is mounted to IT. But since the rear of the stock has an elevation adjustment dial on the underside, I assume THAT is why there is no sling stud there. But it does have studs on each side of the rear of the stock. But it also has the side-studs at the front, on the forearm, in addition to the single stud on the bottom of the forearm's rail, where the front of the sling is currently attached. I am at a total loss as to how to attach the rear end of the sling to the stock, at the rear. I could just attach it to one side or the other at the rear, but that just doesn't seem right. And there's just no way that it looks right. So I am thinking that there must be some sort of "Y" adapter that I need, that attaches to the rear end of the sling, which would allow it to connect to the studs on BOTH sides of the stock, at the rear. Is this correct? If not, how is a sling supposed to be mounted, on a stock that only has the dual side-stud setup, at the rear?