I've only seen a couple of guns with that kind of front sight…
Does anyone know if there is a name for this style of sight?…
The closest identified sight I see is shown on page 32 of
Volume 56, Number 2 • Summer 2022… the King Modified Patridge.
The one the OP has isn't a King, that I can tell, but it is a modified Patridge blade.
-Bill
King Modified Patridge on 6.5" S&W DA .45 Barrel

