Rooney, I'd have to answer your question by saying "Sort of". I tried to order one for my GMR 13 but when I received it I saw that I had inadvertently ordered the GMR 15 version.
I reordered and have the GMR 13 version in route to me now. I got to examine the 15 version and am very impressed with the workmanship. Very well made. I can hardly wait to receive the correct one and get it mounted on my 13.