What is one of the features of the Glock 19 that enhances accuracy?

The Glock 19 features hexagonal rifling, which is a design that enhances the accuracy of the firearm. This type of rifling creates a better engagement between the bullet and the barrel, allowing for a more consistent spin as the bullet travels down the barrel. The shape of the rifling also reduces the amount of contact area, leading to less friction and improved gas seal around the bullet. This can result in higher velocity and greater accuracy at various distances.

While other features like adjustable sights can contribute to aiming accuracy, hexagonal rifling specifically affects how the bullet is stabilized during flight, making it a critical factor in enhancing the overall precision of the Glock 19.