I think you may have a better chance with that on the Glock forums than here. I know most of us own multiple manufacturers firearms, but you might be more inclined to check out Lone Wolf Distributors and deal with the waiting time of about 6 weeks before they're available.
KKM barrels is another place to buy a conversion barrel, i bought a stock length 10mm from them. All i can tell
you is its pretty...lol i haven't used it yet, I'm still waiting for my G20SF to come in (GSSF free gun certificate)