I noticed something surprising the other day. The Gen 4 G19 lock up is different from the Gen 3's.
When you press down on the barrel hood of a Gen 3 gun, it moves downward about a tenth or an inch or so. (The slide does not need to move back for this to happen.) Let go, and the barrel pops back up.
On the Gen 4 G19, the breech locks up like a vault. If you press on it, you can get the entire slide to move up/down maybe a couple hundredths due to rail clearance, but the barrel does not move in relation to the slide, whatsoever.
I just thought that was curious. I have not yet tried swapping barrels between guns. Maybe I'll try that and see what gives.
When you press down on the barrel hood of a Gen 3 gun, it moves downward about a tenth or an inch or so. (The slide does not need to move back for this to happen.) Let go, and the barrel pops back up.
On the Gen 4 G19, the breech locks up like a vault. If you press on it, you can get the entire slide to move up/down maybe a couple hundredths due to rail clearance, but the barrel does not move in relation to the slide, whatsoever.
I just thought that was curious. I have not yet tried swapping barrels between guns. Maybe I'll try that and see what gives.