If you're dead set on metal, Denix is only OK. I own a handful of denix replicas, mostly revolvers, but I have a luger p08, and I like it. I also have a bunch of MGC guns. some lugers, and some 1911's. But the 1911's I have are not complete. They're missing safeties and magazine releases, and mags.
If you want an MGC model, check ebay and gunbroker, and search MGC gun, or MGC 1911. They pop up as new old stock from time to time, and usually cost anywhere from $150 to $300 depending on condition. Parts are impossible to find, so don't break any of the parts or lose them!
Marushin, Tanaka, and probably a few other Japanese companies make replica 1911's that fire plug fire caps from reusable brass shells. Those are fun, and break down and operate very much like the real deal.
I own a Marushin plug firing cap 1911, which is plastic, but still really nice. It doesn't look half bad firing too.
I've also owned a bunch of blank firing 1911's and I have a springfield "loaded" 1911 too. I'm a bit of a 1911 fanatic.
Feel free to PM with specific questions. I've been collecting real and replica guns for a long time. Happy to help.