you can use any carbine forend, that means the ones made for 16 and 21 inch barrels, with your barrel, you will only use the front screw to hold it on. If you want you can have another dovetail cut into the barrel and another estuchon installed so that you can use the back hole also, you may or may not need that, depends upon how it shoots with one screw.
good luck with your barrel,
Gene