I am looking at getting a LaRue Tactical AR10 13.2 Handguard LT10-13.2 for my DPMS rifle. The number of threads per inch on the barrel nut are different between the ArmaLite (1 7/16 x 18) and DPMS (1 7/16 x 16). Has anyone had a barrel nut manufactured by a company or does anyone here have a company they would recommend manufacturing a barrel nut? I figure I would buy the handguard and send the supplied barrel nut to the manufacturing company to duplicate with 1 7/16 x 16 threads.