Got my Glock 20 a new barrel from KKM and tried it out today at the range. In short, this is an exceptional upgrade from the factory barrel. The accuracy is notably improved. The shot dispersion is considerably smaller for this shooter compared to using the stock Glock barrel. I have shot 600-700 rounds through my stock G20 so I am hardly an accomplished 10 mm shooter. Mostly 200 and 230 gr Double Tap as I bought this gun for a woods gun. Ran some 180 gr Remington UMC through it as well and that is what I used today in the new KKM barrel. Not premium ammo by most standards, but 150 rounds went flawlessly through the KKM. I suspect a custom tailored reload and practice will result in even tighter grouping. Immediately upon shooting this KKM barrel today I understand what the fuss is about. Sorry for the crap images, I used my cell phone as I was rushed for time. This is what you get... Out with the old, in with the new... Chamber support and feeding ramp shot... Snug as a bug in a rug... My reward for donating $165 to the KKM fund. 15 shots off hand from 10 yards... -Dan Wanna kill these ads? We can help!