THE 5-SECOND TRICK FOR KAC UPPERS

Two pushbutton (aka QD or snap-in) sling swivel attachments came Together with the SR-15E3 and there are ambidextrous holes to snap them into about the SOPMOD buttstock and at three destinations on both sides of the upper and decrease receivers.Also you can find the buffer tube mounts for sling swivels (which appear to be a favorite of pat Roberts