If the case had a blue label it would've had a standard connector, which for Gen4 is the "dot/Gen4" connector. With that connector the trigger pull is still a little heavier than standard Gen3. If the case was red or white label it should've had the "minus" connector, but the trigger pull would still be a little heavier than a minus connector in a Gen3. The Gen4 trigger bars have a bump on the arm that engages the firing pin safety, that bumps rides on the slide to keep the arm more centered over the safety and that extra drag adds to the trigger pull weight slightly.
There's probably some other factor that contributes to the heavier trigger pull but I have no idea what it would be, the 10mm/45 trigger bars have had that bump forever and their trigger pull is pretty much the same as other calibers in Gen3.
Last edited by voyager4520; 10-28-2013 at 23:13..