I definitely see the difference now! Some users suggested that my stock might have been sanded down. As for the bayonet lug, that is such a minimal change that I would have definitely not noticed at all lolHere are reference images from an original BLM 41 dated rifle, from the 'n' block, much later than your 'g' block.
Stock side acceptance and inspection, stock lower SN and correct bayonet lug for 'H' band.