At one time I had created a detail design drawing for a replacement (taller) front sight. I passed this drawing out (free-gratis) to several firms we're familiar with including EMF, Dixie Gun Works and Cimmarron FA at SHOT show back around 2003. I haven't seen them available, so I guess my idea didn't "fly". I've had to replace a number of blade front sights on C&B pistols and find this a relatively easy procedure.
Regards,
Slim