I have a couple of supior lowers that I got from RBprecision that look top notch, the match to the delton kit is damn near perfect. I have one of the pictogram lowers and it looks pretty good as far as the engraving/roll mark or what ever they are goes. Heres the link to them,
www.rbprecision.com/id74.htm
Im not to sure if that is what your looking for or not, however there is a guy here,Tom, that does custom engravings/serial numbers etc for ya on the lowers and im sure he'll do the upper also. Heres his thread in the EE.
www.ar15.com/forums/topic.html?b=7&f=21&t=306057
I hope this all helps, I should have my lower put together tonight and hopefully post some new pix of the rifle all together in my thread here
www.ar15.com/forums/topic.html?b=3&f=4&t=274800
Well good luck on your build, Hunter121