A Glock switch thus converts the weapon right into a machine pistol effective at automated fireplace.[nine] The device is about the dimensions of the America quarter, and when set up to the rear on the slide on the Glock pistol (replacing the slide cover plate), provides a selective fire switch; https://glock-switch-keychain58877.wikiitemization.com/5150433/top_glock_with_a_switch_secrets