Agreed, the carry handle despite the optics offset is still the strongest rear sight available, and looks better.
That A1 stocked receiver above is getting a “Retro” slickside pre-A1 upper. Sure the lower won’t be period correct, but it’s what I want.
The barrel will be a 20″ like the original, but a 1/7″ for hunting bullets. Have the original triangular handguard also. A few concessions to modern will be made, such as the MagPul grip, but it’s going to be a sleeper.