The new ARFX no longer requires one of Aces threaded sling adapters. Instead, there are 7 QD pockets leaving no excuse for improper sling mounting.  This is a new very unique looking tactical stock. Stock is all aluminum. Kit includes 1/2″ butt pad, mounting screws and QD sling swivel & foam sleeve. You can use your existing (A2) buffer tube, buffer and spring. Stock does not include buffer tube, buffer or spring.