Bubba, I'd take that offer. If it was an RSM model with quarter rib, barrel band and express sights, it might be worth it if someone could find an original RSM stock.
Biebs,
Gun Parts Co. (AKA Numrich Arms) has stocks for 2 of the 3 RSM variants in stock. I’ve bought 2 stocks from them. IIRC they were about $250 NIB each.
BubbaG,
The muzzle brake is an unfortunate aftermarket addition which won’t enhance the value. One of my 416 Rigby RSMs had a muzzle brake installed when I bought it. When I had it rebored to 0.458” and throated to turn it into a 450 Rigby Rimless, I had the threaded muzzle for the brake cut off.
IME it’s unnecessary in an appropriate weight RSM.