Last summer, after 4 or 5 years of playing with .22 uppers, I decided to build an accurate .22 AR. The 20" Kuehl MKI is nice, the DPMS M-4 was fun and accurate, as are the M1S and Spike's ST-22 LW 16" HB CAR.
I had seen the MK12 and determined I needed one. I liked Compass Lakes info better...