I'm in the process of digitally kitbashing together a C7A2 rifle (current-issue service rifle for the Canadian Armed Forces) and downloaded this Elcan C97 model.
1) The modelling and detail is extremely good! As I'm retired now I don't happen to have access to an actual C79A2 sight for comparison, but certainly from every angle this looks exactly as I remember them, and jives with every photo I can find of them. The only thing necessary is to edit the texture of the sight body to match the green furniture of the C7A2 rifle.
2) When I had a problem with the RAR of the Blender file, I contacted FlamingEagle to ask if I could get the file in ZIP format and had a reply - and the ZIP archive - in literally only a couple of hours.
While I'm not wild overall about the UI of the website, I can and so STRONGLY recommend FlamingEagle's work!