The adapter is supplied with US screws to attach directly to the stocks of rifles that have been already been fitted with twin sling stud mounting points.
In these cases, the adapter is simply secured to the surface of the stock with the provided screws.
1 x 10/32 countersunk screw located inside the socket of the adapter.
1 x 10/32 cap head screw which fits within the Picatinny rail to secure the rear of the adapter to the stock.
The hole spacing isn't precisely critical as the rear screw fits into a slot, and the screw can be fitted at any point along with the slot that still provides proper support for the adapter.
The adapter also includes two 10/32 nuts & washers & two 'T' or 'Pronged' nuts for installation into synthetic stocks that don't have existing mounting points.
Solid stocks that don't already have threaded mounting points fitted can be adapted by the use of suitable inserts, that can be embedded into the stock, and provide a fitting point for the adapters screws.
The sling swivel can simply be attached to the rear of the adapter (In the case of a conventional sling swivel & QD Sling Swivel.)
Conventional Sling Swivel
QD Sling Swivel