Depends what your definition of perfect is.
the M70 type may be perfect for your business objective,
I But if your talking purely about integrity, intelligence,and proper thoughfulness of design, the M98 hold the aces as far as im concerned.The M70 type. It began as, and ended as, a compromise of an M98.

The Harre49 reciever is an m70 type that is aimed at the highend market. They offered steel,stainless,and Titanium versions, integral scope ring option,needle roller bearing triggers,one piece bottom metal, Mauser C-ring.
Incorporating the latest machining and EDM technology, they work in single figure Microns, not thousanths of an inch.
it would be difficult to surpass the quality of those recievers
They are without doubt the most dimentionally accurate reciever ever made.

You say your version wont be cheap,how much $$ are you talking about??
Will it be a forged, cast or prehardened steel reciever?

WFH start at US$2K, for a Harre49 well in excess of US$3K.

good luck with your project, will be interesting to see what you come up with.

I just so happen to have just spent the last few days at an engineering exhibition.
I enquired about EDM machines. For something to cover jobs up to 400mm price was about US$150k, machine to do 1000mm jobs was about $US800k. price goes up disproportionally. Incredibly accurate, think he said 1 micron or less variation over that distance on final cut.
There was laser probe measuring equipment capable of measuring very minute fractions of a micron.about US$100K complete with indexing probe head.
They had a laser metal building machine that could build just about any shape using a variety of plastic or metal base powder compounds.really interesting and applicable for small and complex parts. strength and integrity seem to be there, cause they use them to build turbine blades for jet engines.
Waterjet was interesting, one company mentioned than they are coming forward with a sytem that is accurate within a few microns and maybe less.