Hera LINK SYSTEM. Our muzzle attachments from the LINK series combine basic holders with various muzzle attachments. Depending on the base holder, this not only serves to hold our attachments but also serves as an interface for mounting silencers from various manufacturers. Clamping the attachments greatly simplifies assembly, and there is no need to screw them against a crimping or clamping washer. All of our products are from the LINK seriesamong themselvesthe compatible and can be combined as desired. The basic holders of the LINK system are available in the common thread sizes M15x1, 1/2x28 UNF and 5/8x24 UNF. Basic holders for mounting silencers are equipped with external threads M27x1.5 and sprockets with a diameter of 29mm