I noticed that the rifling on my friend's G19 is more aggressive-looking than on my pistol. I mean, side-by-side, the inside of my .45 barrel looks almost round, where the 9mm looks more like a star.They are great, the .45 bored barrels have a reputation for the best accuracy of the Glock models, possibly because they are made on different machinery and in smaller numbers than the other bore sizes.
Specifically, the G30.
I'm considering one as an "all purpose" pistol, main CCW, home defense, SHTF and woods gun for hiking etc.