8200 rpm
I retail the custom 1911 and install night sights. I am not making a plug here. So my comments are from customer observations, my own shooting, retail sales, and my opinion (I caveat here with this: Opinions are many times like what I sit on some smell worse than others, this includes mine.).
The three dot version of the night sight outsell the bar dot about 20 to 1. The order of popularity is three dot. bar dot, single dot and then the rest of the "whatever" configuation to "conflagilation" the gun rags promote.
Colors are next. Three greens 25 to 1 over the yellow, green, yellow, then the YGY at least 20 to one over the rest of the rainbow selection.
I like three dot but my eyes are not what they use to be (age 50) hence I am a proponent of the single dot or ashley express big dot tritium.
Bar dot is an excellent site system and Novak sights has an excellent reputation. It is a good choice.
Call Novaks at 304 485 9295, Kevin Stump or Joe Bonar will answer any questions you may have.
These are not for the sub 1" groups and 50 yard handgun shooting. The sights are designed for fast acquisition at short ranges.
Hope this helps.
Be safe and keep the brass flying
Terry Peters
http://www.pt-partners.com
Do the research but you get what you pay for front end or back end.