Hi,
I am not an expert, but the guy, who built this, should be:
http://www.missing-lynx.com/gallery/modern/centurion_tang.htm
His name is TJ Tang and may be the guys of missing-lynx.com could help you with a contact.
You also could try the following site for more information:
http://idfmodelling.free.fr/shot.html
Hope this is, what you're looking for.
best regards
Frank