I have searched the web looking for twistlock barrel adaptors and it is near impossible to find. So here is a possible option. What if a machinist can take a pre existing twistlock barrel, cut it down past the detents to bore and thread it to fit other barrel threads? I know there are people out there that have barrel boring to accept Freak inserts. If someone would take this on (Lukescustoms, hint hint) or someone capable, then we can order the modification to the barrels we already have.
I have quite a few old Angel threaded barrels and have sold off all my LCDs and G7's but I still have those barrels lying around. I only have 2 twistlock barrels that I would send in for modification to accept these.
It's a better option to have more than just autococker threaded adaptors and not having to wait till someone just makes adaptors. Ton's of twistlocks already out there that can be modified to order.