Any Gunsmiths in the house?

If memory is correct that was the way they came . Do not do any mods to it until you do some research .I think they had a very small screw in them. But most were pinned. losing the front sight post was not uncommon
I will do some looking.
Trade it maybe for a glock never.
Randall used a lot of out sourcing or parts but some model can be hard to find parts for. A sight from someoen like Midway should go right in if no one has messed with it

If memory is correct that was the way they came . Do not do any mods to it until you do some research .I think they had a very small screw in them.
I will do some looking.
Many places like Midway offer front sight post that should drop right in cheap apart.
It may not be worth having a high end front sight custom fitted.

There is a very good chance this is what you have