It is possible, but it's not a simple drop-in. Super barrels have to be fitted if you expect to achieve reliable functioning and normal service life. The easiest way is to selectively fit one from a handful of spares. I would not consider trying it with a single Numrich aftermarket barrel, as the quality is doubtful, and proper fitting may be impossible. Unless the original barrel were totally toast, and I had absolutely no alternative if I wanted to shoot it, I'd leave it alone. It any event it's a happier gun in Largo; why not use it that way?