I was able to get a lower CMMG half MK3 Mod 11. What do you guys think I shopuld try and build. The purpose I think would be a standard hunting rifle shooting out to 600 yards. I would like to keep it to no custom barrels just upper halves of stripped uppers. I also was able to get a stripped lower AR15. I am torn between building a light weight pink gun for my fiance or a piston driven pistol. And yes I know AR15.com is the better place to put this but I like this forum better.