The figure 8 sights are made by Heine.
I picked up a set of Meprolite night sights w/the staked front on clearance for $36.00, they are NIB, probably 4-5 years old. Still are very bright.
Now I've got to get them installed. Tried removing the rear, and it's to hard. Going to have a smith do it for $30-40.
If I hadn't found this deal, I would have had a front dovetail cut for $35 and went w/Heine 8 non-tritium.
Good Luck,
Steve