Regarding the purchase/RightToBear: Smooth and easy as possible and their shipping is both fair in cost and speedy.
Regarding the Magpul stock: Good stock but not quite what I was looking for. Ended up selling this to a friend a buying a Magpul STR from another place (only because RTBear doesn't sell the STR). Why? The STR has a bit more surface area that allows a FANTASTIC cheek weld. That and its a smidge lighter in weight than the ACS-L.