woodyjr,
You can't really compare the Glock trigger pull to either a single or double action, but if you had to, it is closer to a double-action, just not as long. It is constant from shot to shot which is good. Many people seem to like their Glocks to be around 5 pounds, mine is about 5 1/2 and it feels good. I would suggest that you find one to try for yourself, that is the best way to find out if you like it or not.
Frosty
MOLON LABE