Well we can figure something out then, because the Ruger was the only one I COULDN'T find as a replica; mine is a rubber trainer cast off of a real Ruger. And yep, one of the high-end airsofts that are no longer manufactured... I don't want to admit what I paid for it, but it's mine now lol.
And yeah, the top hat cases I have found that are correct (save for the lock) typically start at about $300US for me before shipping from Europe, so mine is being scratch-made and then weathered until I find THE CASE (probably never).
I'll take a look at my stuff in the AM then and see what I can find for you. Also, at least with my Spectre (it's spot-on to the actual gun) I can help confirm size and proportions of any 3d models you find if you print yours.
It was hard enough for me to get this one in the states, I have no idea how hard it must be over there to find some of these pieces, never mind getting them shipped