Hey I have a Glock build on 19/compact frame that shoots 22tcm9r if you don’t know about it do your research it’s usually compared to a 5.7 round because of its 2800fps capability so technically you could call it a 5.7 Glock lol it also takes any double stack 9mm Glock mags I have a 17rd and a 15rd gen 5 mag I’m just bored of the gun to be honest