I bought my G19 Gen 5 with the blue label deal from GT several years ago, and they also offered it with the Ameriglo sights already installed which was about $80 more if I remember correctly. And yes, the blue label deal goes through November 11 this year.I have a couple of 19s, and the only complaint I Have is the glock sights are awful. Who ever thought an open box with a dot is a good idea needs to be checked for mental acuity. Swap for some different sights and boom awesome gun! I also recommend getting G17 mags as they work in both 17 and 19s because eventually, if you don't already have one, you will buy one.
I agree that the Glock sights are not good. I also bought a Glock 44 which is the same size as the Glock 19 but have not changed the sights. But, a little bit of creative enhancement with a white Sharpie paint pen makes them just fine for a .22 to practice with.