Parts are most definitely not parts and the difference between a Noveske and say a DPMS is apparent as soon as you pick it up. Not to mention Noveske's cold hammer forged chrome lined barrels. This was how John got started and is the core of what makes Noveske's sought after for their durability and accuracy. A Noveske barrel is the same quality as an M249 SAW but in a 'light' contour. I personally own Noveske(s) and have used the 14.5" 'Afghan' upper on a Colt M4 lower while deployed. If you're plinking you're right - who cares. But if you want the best, you do some research...