Jetski,
You'll like the Sig P226. It really is a fun BB gun and has a great heavy feel to it.
I know for certain that the Tanfoglio Witness 1911, the latest version from Cybergun (it has a true 1911 style trigger) is an all metal gun excepting grips and some internal parts etc.
I am making enquires about importing one myself from the USA but it's hard to get clear advice. On Monday I visit my local HMRC office to get it from the horses mouth!
regards,
Alan