The Glock 19 has a 4-inch barrel, with an overall length of 7.36 inches. The gun is 5 inches tall, and is 1.18 inches wide at the slide. Unloaded, it weighs 23.65 ounces but only goes up to 30 ounces once loaded.Click to see full answer. Regarding this, what size Caliber is a Glock 19? 9mm Secondly, what’s the difference between Glock 19 and 23? The real difference is in magazine capacity. The Glock 19 9mm features a 15-round magazine while the Glock 23 .40 caliber pistol carries 13 rounds in the magazine. The Glock 23 features the typical Glock double-action-only trigger. Subsequently, one may also ask, is the Glock 19 a compact or subcompact? The mid-size Compact frame Glock is my choice for a “one size does-it-all pistol.” The Glock 19 loses almost an inch in overall length and a half-inch in overall height over the Standard, yet gives up only two rounds of magazine capacity. The Compact Glock can easily serve as a home defense or concealment pistol.What Glock do police use?High ammo capacity – The Glock 22, which is carried by 60-70% of American police officers according to some estimates, holds 15 rounds in a standard magazine. By contrast, the old favorite, the S & W Model 10, held six bullets in a rotating cylinder and required reloading one round at a time.