My gen 2 glock 19 accuracy is all over the place cleaned and inspected the barrel and found half the rifling is literally missing. Took a bullet and dropped into barrel and it falls past the chamber into the rifling. My buddy and I can not find any reference to shooting out a glock barrel and the only knowledge of this pistol is it was a law enforcement trade in. We didn't think this was possible. Uploading two pictures one of the shot out rifling barrel and one of a 19 gen 3 barrel with 1500 rounds through it for reference.