The BT28 AFAR Kit is ready to install. The uniquely dimensioned nuts will fit into the rails and slots one direction or rotated 90 degrees to another dimension. We suggest using some Loctite such as 243 when installing.
The BT28 AFAR Kit is American made from 6061-T6 Aluminum with a Milspec Type III hard coat black with 4041 Alloy steel fasteners.