I remember some reports of the rear oem sling point breaking due to stress from the direction the pmm qd mount was installed. I believe most instances were when the qd mount was installed on the barrel side of the rear sling point.
I have the pmm qd mount installed on the stock side of the rear sling point. Disadvantage being, the pmm qd mount must be uninstalled to remove the stock.
Realize this is an old thread; this is the sling mount that I've used. Thus far, it hasn't been an issue, but it hasn't seen much service either. I may start another thread; much as I like my Scorp (it has always run 100%; I can hit things), for as ergonomic as it is to shoot, it's a real pain to carry....a problem shared with many modern weapons.
Moon