I have owned one and it was the best shooting 1911 I have ever had (I could hit better with it than any other).
Problem with AMT products?
"They make good guns...they just don't finish them."
-- John D.
What I mean is you'll probably need to deburr/polish a new AMT gun before it becomes truly reliable. Also, some parts may/may not be interchangeable with milspec/Colt parts.
I replaced the OEM AMT hammer/sear with an Austin Belhert hammer/sear assembly (it had a very unusual hammer notch). It was definitely worth the price.
In all, the AMT turned out to be a great gun, but took some work and a few higher-quality parts in my case.
-- John D.