Just to throw it out (again)- the "clone" or "copy" is not the GTX II (Woodward) trigger- he is the originally designer. His former partner/salesman "CharliedaTuna" on the breakup of their business dealings, produced the GRT III and started calling the original a "copy". Since then both have produced their own, original products as well- the B18/B19 "genuine" trigger is the GTX II, not the other version(s) out there...