Open sights for Browning BAR?

[Sodbuster]

I want to replace the open sights on my Browning BAR Stalker carbine. What I've found are some XS - Express Sights - (formerly Ashley Outdoors). But they are ghost ring type, and the smallest aperture of .191 seems big to me. (I know: carbine, close range, fast acquisition). Does anyone know of another source of peep sights with perhaps a smaller aperture? I've checked both Lyman and Williams with no luck.

 

[Jim Watson]

Williams WGRS-BAR.
Probably sits on top of the receiver at scope base location. Crude adjustments by scale only, but takes any size Williams disk you want to try.

 

[Sodbuster]

I need to do a more diligent search, obviously. Thanks for the info, Jim, I didn't know that.