Beyond somewhat certain instances, there are just not lots of eventualities where a completely automated handgun will outperform a submachine gun. I use the Mech Tec Devices carbine conversion for my Glock twenty in 10mm. Works nicely, if on the heavy facet. It's an alternative choice for your carbine conversion, https://glock18partskit53326.vblogetin.com/32198706/a-simple-key-for-glock-18-upper-unveiled