9mm x 19 (a.k.a. - 9mm Luger and 9mm Parabellum)
10+1 in Massachusetts, 17+1 in free states
The Glock 17 is a polymer-framed, semi-automatic pistol first introduced in 1982. Its rugged design and superb
reliability have made it the most popular pistol among law enforcement and militaries around the world.