OSA Premium Upper Parts Kit (UPK) OSA Premium Upper Parts Kit (UPK) This is our Premium Lower Parts Kit, made in the USA by Forward Controls Design. Includes: Low Snag Forward Assist (LSFA) (Dimple or Serrated) Forward Assist Roll Pin Forward Assist Spring EPC, Billet Ejection... MSRP: Was: Now: $125.00 Choose Options
