as the title states, has anyone heard of AM-TAC Precision ? they are a local company to my brother in law and he wanted to know what i thought of their BCG. they look like a quality part and the metal used sounds good and they are shot peened and MPI tested. but does anyone know anything about the  C-110Q Micro Slick coating they use ? will it last or just snake oil ? do you think he should give it a try or pass ? i recommended toolcraft as an option too.

here is the link to it : http://shop.am-tac.com/AM-TAC-Precision-F-A-Bolt-Carrier-Group-9310-Bolt-MicroSlick-AMBC120X.htm