Editing Open bolt (section)

==Uses==
{{Unreferenced section|date=August 2021}}
Closed-bolt designs are often used in [[rifle]]s. The improved accuracy of closed-bolt weapons is more desirable, while the poorer heat dissipation is less of an issue for slower-firing weapons. In contrast, open-bolt designs are more often used in automatic weapons, such as [[Machine gun|machine guns]]. For fast-firing automatic weapons, heat will rapidly build up from sustained firing, but accuracy is of less importance. Thus, the improved heat dissipation of open-bolt designs is generally more desirable in automatic weapons. [[Submachine guns]] were for much of their life designed with open bolts such as the [[Thompson submachine gun]], [[MP-40]] and the [[Uzi]], mainly for the simplicity and economical advantages, and their rates of fire and close-range nature mitigated the reduced accuracy of the design. SMGs used and built in the current day, such as the [[Heckler and Koch MP5|H&K MP5 series]], have almost universally moved to closed-bolt designs for their practical advantages.