Just thought Id see what you guys thought. I have been using my KKM barrel in my Gen2 G20 for a year flawlessly, never a failure and nice and smooth. I just picked up a Gen3 G20SF last week and was excited to throw the KKM in there and found that the fit was way too tight and it was very difficult the rack the slide and the slide did not want to close fully either with ease like it does on my gen2.. Now, the gen 2 factory barrel and my new gen3's barrels interchange with no issues at all, it just the KKM that works in my gen 2 is too tight for the gen3 it seems. I havent tried to shoot it yet as I feel something is just not right.. Any thoughts? Wanna kill these ads? We can help!