The 3.8 accessories are sloooooowly getting to the market. May be some out now. (haven't checked lately). You just need to get a new barrel to mount the comp or as was said, just a ported extra long barrel (or port the current one and slide).
A caution is that most 3.8's are for carry and ported barrels make it extra super loud for the shooter. I mean single shot permanent hearing damage loud because the blast is redirected back and up to counter the recoil. That's exactly wrong for a carry gun, especially as most SD shootings are in low light. Loud and blindingly bright in the dark. Not a great SD combo! Just my opinion.
Ever since the tragic boating accident, my only weapons are;
Tactical black cat - sleeps in doorways
A right unused become a privilege for the ruling class.