A Glock switch Therefore converts the weapon into a machine pistol capable of automated fire.[9] The system is approximately the dimensions of a United States quarter, and when mounted within the rear in the slide over a Glock pistol (changing the slide protect plate), provides a selective hearth switch; flipping https://elliottcavpi.ouyawiki.com/1612629/glock_switch_for_sale_no_further_a_mystery