Here is picture of mine that DTECH built...well actually he built a different upper but I decided I didn't like the EOP upper and the jacked-up Medesha forend. Neither was Mikes idea, all mine.
The Shilen barrel is all that is left from the original build, I added a Stag A3 upper w/M4 cuts and carbon fiber FF tube.
The barrel has a 1:9 twist and is 21" long with deep flutes front to back. Very well balanced package. It now wears a 4.5-14X VXIII SF, now it is complete and I'm happy with the end result.
Accuracy is pretty good so far, an average 5 shot group is just over 1/2 MOA with an occasional group well under that.
Dtech (Mike) is a good guy to deal with. He is a one man operation, so quality control is pretty tight and I know that he stands behind what he builds. You can expect wait times of 4-6 mos. at the present. Order now for Xmas delivery.