The guy who did this must have been a Woodworker with a capital "W"! I am not too bad with a checkering tool or an inletting chisel but I sure don't have the tools to cut those square corners with the precision this stock has. I think this stock, if original, would have had some collector interest. It has a boxed CHJ inspectors stamp, the cut-off notch has what looks like a "J", the butt plate has heavy square checkering, and the trap has the groove for a spare striker. I find it interesting, also, that with all the care and precision he put into some areas, he didn't seem to care about others: The trigger guard, for instance, is the roughest I've ever seen! Heavy machining marks and the floor plate is dented and pitted. With all the spare parts available cheap, in those days, why not replace 'em? It's not as though any attempt was made toward originality.
My other wonder--Why? What was the purpose? It certainly wasn't intended as a hunting rifle. And the mods would have disqualified it as a military match rifle. Oh, well; just another mystery.