[Malinak]

Are you talking about making an M-Series rifle from aftermarket and spare parts?
If so, that shouldnt be all that hard. You will see butcher sales with the front section of the rifle for sale, spare bodies, and stocks. From there you just need to know how all the parts attach, and what smaller pieces you will still need after all the big parts are bought.
There was a thread made long ago in th General section about this same topic, and the person was able to buy all the parts neded to make his Colt from scratch.