Stubbs, thanks much. That's what I needed to know. Unfortunately, my outer barrel is also broken. It actually snapped off at the base of the threads, so it cannot be attached again. The quality of the metal I can see from where it broke is pretty terrible, as was the bi-pod mount piece. 2 skirms, 2 broken parts.
They do sell replacement bi-pod parts, but as part of a "hard steel" kit of M249 parts that cost $220. I only need 1 of the 5 parts in the kit. As far as I can tell for the barrels, they don't sell any aftermarket or replacement outer barrels, so I'm pretty much SOL in that