Just got the new 30S. It's very nice and shot without malfunction (different from my experience with a 36, by the way). BUT when I went looking for information on after-market barrels like Lone Wolf, KKM, or BarSto, I found that no one has (or if they have they are not sharing) solid technical information on the difference between the barrels for the 30, 36 and 30S. Among others, Mas on this forum has stated that the 30 and 30S barrels are not interchangeable. Others (on threads I can't find right now) have stated that there may be differences in the chamber thickness and ramp dimensions between the 30 and 36 barrels. But I can't find good quality detailed information on the specifics. I can't even find good quality information on the bottom line question: if I want to buy an aftermarket barrel to shoot lead bullets, what can I order. I called KKM and the technician who answered the phone didn't know what I was talking about (except that he asserted the 36 is a defective design and Glock has dropped it). I called Lone Wolf and that technician did not know anything about the new model or any plans to produce a LW barrel for it. I called Glock and that technician confirmed the 30 and 36 barrels are not interchangeable but couldn't tell me why or whether 30S barrel was a 36 or something completely new, and otherwise seemed to know about as much and as little as the folks from KKM and Lone Wolf. If you have good, reliable, verifiable information on these 30S questions, would you post it? - Does the 30S use the stock 36 barrel, the 30 barrel or something new? - If different, what are the differences? - If you want a replacement barrel, where do you go? - Is the barrel-feed-chamber of the 36 really defective? - If so and if the 30S uses a 36 barrel did Glock fix the problems (if any)? - etc. Thanks.