I recently acquired what I believe is an older Truglo SSX choke (Ben/Ber). Comparing it to the new one I received from Truglo (after the first one swelled in my old Nova) it looks different. They both say Truglo TG155X but on the older one the fluting on the extended portion is flatter/wider and the threads don't go all the way up to the knurled ring. Also, it feels a little heavier that the new one. Is the older one U.S.A. made? Any thoughts? I tried to post a photo but it said the file is too large. Thanks in advance..