Standard front sight base?

[msr]

Is the standard front sight base indexed? In other words when removing and re-installing it will it be indexed to align back up properly? What keeps it from being canted?

[Frank Castle]

It is pinned to the barrel. Assuming that it was initially installed properly, it will index properly without any cant when reinstalled.

[Quib]

The FSB is match drilled to the barrel. If you remove it, then reinstall it, all that is required is to align the taper drilled holes in the barrel and FSB by eye. The installation and setting of the FSB taper pins with a hammer and punch, will draw the FSB and barrel together. FSB alignment should fall right back into place as it was to begin with.