The SL tubing hanger system is designed for use over TLC (Tubingless Completion) equipment. Once production through a larger tubing string begins to slow, the operator may choose to install a smaller tubing string in order to continue lifting fluids. In this application, the SL tubing head can be installed between the TLC adapter and lower master valve. The SL tubing head features a retractable tag pin that allows for full opening bore for passage of back pressure valves and ensures positive tubing hanger location. The SL tubing hanger is landed through the tree, secured in place and may begin taking production. If so desired, the operator may also choose to utilize a crossover adapter in order to install a smaller bore tree over the installed SL tubing hanger.