Posted: 11/3/2014 8:29:58 PM EDT
| I installed a Gen 4 G17 trigger bar in my Gen 3 G19. The trigger seems a lot heavier now. Is there a difference between the two generations of trigger bars? |
|
The bump does keep the trigger bar from flexing during the trigger break, but I fail to see the connection with the mag catch.
Don't know but that's what they told us from Glock instructor. He also said you never have to replace the striker spring which is flat out wrong, as I have worn a few out myself. 
|
|
Can't really tell on my glock but, I know on my M&P, the trigger bar will slightly rotate when it is actuated. I am betting this bump acts as a guide to keep the bar from doing that same slight rotation by limiting travel space for the trigger bar.
Other than that, I don't see any other reason for it. I have not been able to compare 3 & 4 trigger bars to see if there are any more differences. E.g. Angles, lengths etc... |
|
I have also read that the angle where the trigger bar meets the connector is slightly different on the Gen 4 vs. Gen 3. I've played around a bit with them and actually found that by swapping the Gen 3 trigger/bar from my G26 with a Scherer 3.5# connector and the Gen 4 trigger/bar from my G19 with a stock connector, made the two almost identical. Haven't measured them, but they feel the same. The G26 with Scherer 3.5# connector felt mushy and had very little overtravel when I first put it together. |
| Gen 3 and prior trigger bars flex outward slightly during the trigger break. This spreads the force of the break over short distance which makes it feel lighter than if there were no flex. Glock does not like that this flex causes the striker engagement edge of the cruciform at the rear of the trigger bar to rotate slightly and release the striker slightly unevenly. The bump on the Gen 4 trigger bar prevents it from flexing outward, so it releases the striker evenly. However, since there is no extra trigger travel from trigger bar flex during the break, it feels slightly heavier than prior generations. |
