Jack, I had posted the issue on rimfirecentral and the material and manufacturing was touched on in further detail.
http://www.rimfirecentral.com/forums...ad.php?t=96595
The gun is so much fun to shoot, half the price and essentially the same operation of a combat caliber gun and cute as hell. The mistake might be to forget its for plinking only and to believe everything with the Walther logo on it is sanctioned by Herr Majesty's Secret Service.