Frank-

Zippernut is correct, Gordon is the manufacturer. They make alot of different material configurations, and to be honest I don't know exactly which one Bowtech uses, I've checked through their catalog and binder and cannot find anything about specific composition, probably power-tuff or bo-tuff seeing as it is a straight limb, similar to what the rest of the manufacturers that utilize straight limbs use here in the States. Good shooting, Pinwheel 12