The G19 is the 3rd handgun introduced by Glock. It’s referred to as the best conceal carry handgun because it’s small enough to conceal yet large enough to actually fight back with. The magazine holds 15 rounds of 9mm and the larger frame G17 magazines will fit as well-thus allowing the G19 to carry 17+1 rounds of 9mm.
One of the best things about Glocks is their interchangeability of almost every single part with other models. Magazines, triggers, springs, strikers, etc are capable of being used in multiple designs of Glock.
The Glock 19 has been used by law enforcement and conceal carry citizens for years and has always been completely reliable. This weapon is equipped with Glock’s utility/accessory rail that is capable of mounting a light, laser, etc.