Well, actually, they do offer the product. Don't know about the “reasonable prices”, though. You can scroll down to the bottom of the page and judge for yourself how “reasonable” the asking (Euro) price is.I wish Walther would offer MOS complete uppers like Glock does at reasonable prices . I know I would buy one if available . Or even long slides . More customer support would be nice .
The same applies to the long slides. They're available as complete kits, comprising slide, barrel and RSA, but they'll cost you almost the price of a new pistol and almost certainly more than a used pistol.