Well, Carolco was the production company that produced
Terminator 2. A web search using the key words, "carolco figures", turns up a lot of content, including this blog article that gives an overview of the company's history:
http://www.denofgeek.com/us/movies/carolco/233689/the-rise-and-fall-of-carolco
The stamp under the base suggests that these are figures licensed by the studio (wow-obtaining a license to make a figure of a film character-what an unusual concept!) but it doesn't help us ID the maker.
Kenner made larger action figures of T2 characters, and the same search I ran returns several eBay auctions for them. No white metal figures, though.
I tried refining the search by adding "white metal" to my criteria, but that didn't return anything about figures like yours, so I tried "terminator 2 metal figures", and "terminator 2 wargame figures", and still no luck. I keep getting records for the Kenner and other larger, plastic figures.
Hopefully someone more familiar with wargame figures will be able to provide more info about them.
Prost!
Brad