Try J.B.Phillipson.Its very unlikely that they would have been able to take on your work as they are extremely busy.Normally if you order actions from them it can take over a year before your order will be fulfilled,and if any design work is involved it will take longer.
Going back to the forgings it is generally recognised that,as well as for strength,forgings were used to reduce the amount of metal that initially needed to be machined to produce a starting point to make the gun.This was in days gone by when the machines were not as good as they are now.
The cnc machining is not complete answer to speedy gun manufacture.I have made a lot of guns both using modern machinings and also old machinings from pre cnc days,and a lot of the methods used from producing guns the old way are actually quicker than with the cnc'd parts.The answer is a mix of both but unfortunately however many times you try to explain this to the gun companies,the people at the top are blinded by technology and a box of great looking machinings that dont go together.