Knights Armament M110 flash hider - used
This is also the mounting device for the KAC M110 suppressor. 3/4" -24, which is specific to KAC SR-25 family of barrels.
This is a used flash hider. Medium grade, or B+ to B-. Fully functional. Does not include any shims. Shows very light signs of use and wear. Many have some degree of carbon or sulfur in the muzzle, and wrench marks from tightening on the barrel. The color will be grey to black with the tip coloration still visible.