Hi everyone, On another forum, I heard someone saying that with a 3rd Gen G17, you could just swap barrels and shoot .357 SIG. Now, I'm aware that this is the case with most .40 SW pistols. Can the G17 be made to function safely with just a barrel and magazine swap? Or, would this need a slide (top end) swap as well? More likely scenario- the poster might have been referring to a G22. Thanks in advance!