I ran across a company that makes a very low profile trigger and bottom metal. It only takes 2 down, but results in a stock that is much thinner than average. I called and asked if they sold said system, and they said the do not.
Mule deer mentioned that with a little work a military mauser trigger could be worked into a great trigger. What I'm wondering is if you could cut some metal out of the middle of the trigger and then weld it back together, then cut down bottom metal and follower spring accordingly. I'd bet you could knock of a pound or two as a result.

Here is the company
http://www.kesslerin.info/sites/system.html

This is regarding the g33 i just picked up, I'm making a pattern stock, and i don't think i would be very difficult to adapt the stock demensions to a cut down trigger guard.