With the price of the parts now that might not be a bad deal if you have a receiver to put them on. There seems to have been some problems with the National Ord rec breaking up. If you look on ebay the cost of a good stock is more than 1/3 of the asking price. Barrels are going for 150-200. Personally I would try and get it for a bit less and put the parts on an original rec., even if it is a drill rifle one.. As to the use of Drill rifle receivers just remember almost all the A4 clones on the market today use a drill rifle rec. I personally have restored over 100 of them and never have seen a problem. Realize that a restored DR is not worth what a unmolested gov rec rifle is worth, but if you want an inexpensive shooter that is one way to do it. Also I would feel safer shooting a DR that I restored than a National Ordnance receiver. My opinion, your mileage may vary