While both the UBR and STR come with reversible push-button QD swivel sockets pre-installed on the left side of the stock (Type 1 Kits), the Sling Mount Kit - Type 2 can be installed on the opposite side to add additional push-button sling swivels.
Additionally, this Type 2 Kit can be utilized with the optional Type 1 Kit for running ambidextrous sling swivels on the SGA, MOE Rifle, and MOE Fixed Carbine Stocks.
Heavy-duty black phosphatized steel construction easily installs with the original hardware.
Swivels not included.
Made in U.S.A.
NOTE: The Sling Mount Kit - Type 2 can NOT be used to run dual-side swivels on the ACS or ACS-L Stocks.