I have a Sig P226 .40 S&W. Sounds kind of stupid but I wear contact lenses and when I'm at the range all the breeze from the ventilation dries them out wicked and makes it hard to focus on my front sight. I'm thinking that it would be helpful to have something brighter. When I went to a training course at Sig Academy one of the instructors had a fiber optic green sight as his front site and swore by it. I didn't think to ask where he got it, or how to install something like that. Any one have one of these and care to make a recommendation on what brands are good and how to have them installed? Thanks!