Just wondering about satisfaction and Quality.
I'm thinking of ordering an Upper from him

NO One ?

Mike at dtech does excellent work on his firearms.  he's got an A+ for quality from me.  He's built me a 25wssm upper that looks good and shoots good....I mean .5" groups the norm from sandbags.  it basically shot so well that two of my uncles had order uppers for themselves and a few of my cousins that has seen what my .25cal AR can do is already planning to have Mike build them one soon.  All they've ever said to me now about what upper they wanted to get was "I'm going to get the same upper that you've got in either .243 or .25"
you should ask around over at predatormasters.com.  this is where many guys that has had uppers/AR's built by dTech.

Thanks guys:
I'm basiclly wanting the 20" Olymipic barrel in .223 Chamber 1:10 twist
Flat  top Upper complete, Ready to shoot.
And I want it to drive tacks.

Heck it that's all you want, just buy from Oly. The price will probably be better anyway. If you did have a problem, Mike is an authorized repair center for Oly.

I have worked with Mike in the past and will be buying an upper from him soon... maybe a whole gun... in .25WSSM. I have been holding out for about a year and a half hoping that he would be able to pull off a .257WSM, but apparently it just won't fit.