I remember some years ago I was in a match with a guy who was using a TRG 22... I was quite impressed with how well he was doing. He didn't out shoot me but he chased me pretty hard for a factory gun.
That same guy opened a web site selling firearm accessories but has has the worst customer relationship policies I have ever experienced, so I wont even mention the name here for fear of inadvertently advertising for the schmuck.
But the TRG22 was a contender that's for sure.