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I put on a 19 inch heavy barrel to get it non restricted and used it in a 3 gun last weekend. Shot great but trying to knock over heavy steel plates at 100 yards not so good. Could see the hits on target but they had to fall to count. Other than that works great on paper. 9mm with 96 mags you can stay with the ARs up to 100 yds on paper but not steel.
There is a HUGE thread on this in the Balck rifles forum. I have had three, still own 2. I use holosun red dot's on them, don't need much else. Anything within 100 m is in trouble, it's very accurate.