Ok, that was my main concern, if the full length factory chokes would have a problem without the rest of the barrel. I will just leave it with 20".
Is there any way I could measure what barrel I have now to see what chokes are possible? This 20" cylinder barrel is .065" thick at the muzzle. I guess I never thought about not being able to find a tap for Invector plus, I suppose different chokes arent that big of a deal but I would love to use my other Invector Plus chokes.