MAGPUL Sling Mount Kit - Type 2 Adds additional room for QD or QDMsWhile both the Gen 1 UBR and STR come with TYPE 1 push button QD swivel sockets pre installed on the left side of the stock, this Sling Mount Kit TYPE 2 can be installed on the opposite side to add additional push button QD Sling Swivels or our own Magpul QDM. Additionally, for running ambidextrous sling swivels on the SGA, MOE Rifle, MOE Fixed Carbine, MOE AK, Zhukov S, Hunter 700, and Hunter X 22 Stocks, this TYPE 2 Kit must be utilized in