Here's an older 24 in .22/.410 that I am prepping for my 12 y/o grandson.
Actually I had the little combo D&T for a peep because of the frail and always-drifting rear sight Savage put on these. They changed to a dual dove-tail unit awhile later, but they weren't much better.
The front sight is off because I thought it would need a higher front sight – like the installation of the barrel slot mounted RE-24 Redfield for later 24's
Anyway, the factory front sight will work here with the Lyman 53D without alteration. I haven't reinstalled it.
BTW: The hammer extention is not for a scope. Its to make the 24 easier to cock for a youngster.