Brand new, in the package Ambidextrous Rear Sling Adapter- fits ARs w/ collapsible stocks. I ordered this one and found another before it arrived. $18 SHIPPED.
Or maybe trade for a NEW:
black window PMAG
Glock 22 factory mag
two AK-47 30 rd mags

Or maybe trade for a NEW:
black window PMAG
Glock 22 factory mag
two AK-47 30 rd mags