I have a 3rd gen G21SF with a lone wolf threaded tactical barrel. Still need to get the tactical slide and compensator to complete it. The other day I was comparing my Glock 21 mag to the one for a CZ 52 that I have. They appear to be of same depth. Is it possible to get a G21 pistol converted to 7.62X25 round? It would probably take about 20 rounds in a wide magazine. That would be some pistol in a 6 inch barrel. Any thoughts?