A flush mount socket set for your rifle. Includes base and removable swivel. These only fit a 1" sling (1.25" will not fit). I have sling kits with the swivel only listed here on the site.
2019 notes: It's Xmas, any Steyr Sling or part will be shipped after the holiday (note: if you need the sling portion ONLY, that'll most likely ship)