Concealed carry civilian - Trijicon Heavy Duty Night Sights Yellow Front Outline S&W M&P Shield

Pull in a perfect zero light sight picture instantly, as easily as daylight. If you're over 40, even daylight sight acquisition is greatly enhanced. If you carry, you should have these tritium sights. Holster clearance as easy as with manufacturers iron sights. Installs cheaply. My gunsmith charged $20 and did the job including laser alignment, in 15 minutes, while I waited.