My G26, with 3.5# connector installed and nothing else, no polishing or anything, the measured trigger pull is 4 pounds 7.1 ounces (that's less than 4.5 pounds), measured with a Lyman trigger pull gage. She has had I would imagine over 10,000 rounds thru her.
The average pull weight (meaning I measure 5 times, add the measurements up, and then divide by 5) is 4 pounds 4 ounces.
Unless you measure it yourself, you will never know. Perhaps you can take it to a local gunsmith and ask him to measure it for you? Shouldn't cost anything to do this.
Variations in manufacture and assembly, as well as level of wear, can have a large effect on measured trigger pull weight, so it is best to have your Glock measured and not to rely on any one else's measurement.
Not very helpful, I know, sorry....
