This part is for guns that have a canted factory handguard mounting bracket
This part comes with shims that can be stacked between the mounting bracket and handguard yoke to get the handguard centered over the suppressor.
*Installation Tip: Stacking the washers between the mounting bracket and yoke requires patience. Lay the gun on its side and once you figure out the stack thickness on either side you may want to glue the shims together on each side.