Just got this into shooting shape recently, built it myself. Everything is hard fit and TIGHT. STI frame and slide, KKM bull barrel with Bedell Ti comp, EE fire control parts and all the other goodies. No finish on it yet, still in the white. It is chambered in 9mm, so far I have worked up 5 powders for major PF loads. Runs great, all the way from Blazer aluminum garbage to 177 PF and is terribly accurate. This might be the most accurate autoloading handgun I have ever owned, WAY under an inch at 25 yards but that is as far as I have been able to shoot it so far. Almost a month now since temps have been above freezing . I have a feeling this gun will never be 'done'. I am new to open and will probably try a couple configurations over the next year, see what I like best and then build another the way I like and leave this one as a test mule.