Want to buy or trade for the following:
-HK 30 round polymer AR15 mags
-FN Herstal 30 round steel AR15 mags
-AR57 complete upper 12" or 16"
-DRD Tactical upper
-Bipod (Tango Down, Vltor, Bobro, Atlas, GG&G)
-Sabre Defence barrel (especially fluted ss, but interested in all)
-Ergo F93 collapsible stock