I just bought my 1st Glock yesterday, it a Glock 21, 2.5 gen.,
police trade in. Is their anything I should know about these guns.
It seems to be in good shape.
Learn to field strip and clean. Lots of YouTube videos to help. Other than that. Shoot, shoot, and shoot some more. Enjoy it. Some will be along to hate on it, others will congratulate. They are good guns. Very simple. Plenty of good guns out there, but you definitely have one of them.