I agree
Here's some pictures of the Tokyo Marui PX4 gas blow back. It set me back £150, not a bad price.
The externals are all plastic, maybe the odd bit like the hammer and the trigger are metal. The real steel gun is also plastic, so it's not so bad. Magazine holds around 25 rounds and is metal. Field-strips just like the real steel, too.
Features a rotating barrel system which isn't as fancy as it sounds, just means a small part of the inner barrel turns 90 degrees when you pull back the slide.
Comes with interchangable back straps which fit onto the rear of the grip, just alters the size of the grip for people with big, medium or small hands.
The safety doubles up as a decocking lever, which is cool. If you cycle the first round, then decide you don't need it you can just flick the safety up and it decocks itself!