I have owned several SVI guns that Sandy and Tehran Butler spec'ed out for me w/ Bo Mars.
All the SVI/STI BoMar sights will pass muster IMO.
(Strayer/Voight) / (Strayer/Tripp)
The problem is some people complain of the sharp edges of BoMars that are prone to eating your shirts, Expensive Sport Coats etc. regarding CCW issues etc. It has happened to me before I got out the dremel and chamfer/blend the sharp corners etc.
Here is a viable alternative if your interested albeit FIXED:
I'm having a Colt Commander/Officer Ionbonded right now (Boron Carbo Nitride aka Ionbond DLC (Diamond Like Coating) by MARS.
Very hard and durable and actually has a MOH's Hardness rating for real...
Here's Caspian's that gotM4 was referring to I think it's excellent as well.
I know there are more i.e. Wilson etc. as well.
I have also used the Champion Novak Adjustable rear sight that DAWSON sells as well. It is ROBUST and well made albeit a NOVAK cut NOT Bomar etc.
I believe it is made by Champion distributed by Keng's (CHINA Manufacture if that bothers you) and then retailed by Dawson.