Thank you Salt Flat. i`ve made well over 100 upper front hand guards but only 10 rear.
i have a fore end under construction, but all work is being done by hand, and i`ve already messed up the draws. good thing for Peter Laidler`s information on repairing that area. its not a simple process, inletting several places at the same time and on multiple angles over a length of 30 inches. i have set mine aside for now, will probably get back to it in the winter. i am thinking about casting a fitting template from aluminum, essentially taking a negative cast of the inletted areas.
i don't recommend hand carving if someone wanted to go into production, CNC, duplicators and the other automated forms is the way to go.