I will be looking forward to seeing that project all finished. I have noticed that some of the factory receivers are smoother than others. There are variations from PS-90 To PS-90 in finish and definately sight picture. At some point I hope someone comes out with a legal barrel with no sleeve, that is a compliment to the overall looks. With the but stock extended somewhat it could possibly be legal( maybe ) to do a 16 in. barrel then a drop down to the rear weaver rail somewhat lower. I look at stuff from a functional level as to less barrel heat and better eye relief from a more compact unit.