Got a Chambers Pennsylvania Fowler kit I'am working on. About ready to solder the lugs on the barrel. The kit came with 2 sights. One might have been "thrown in" from the guy that I got the kit from. What's the standard for sights on a fowler barrel? One small base heart shaped sight seems to be silver and another in brass looks like a "rear"? Opinions? Ideas? Thanks guys. Mike.