Spent about 2 years back in the day when rails and mounted lights came about. Turned out they were not up to my standards then for CC. I have revisited it this year and have found that in the market place there are now some really good options on the market that come closer to being worth the carry. However, in my tests this year with darkhouse shooting I find that over all I am more efficient with independently controlling my own light source when shooting. I have rediscovered that the rail slows down my presentation, increases maintenance on mounting brackets and electrical circuits,exposes my location,ruins the natural balanced engineered into the pistol, and after the first shot, diffuses the smoke where I can not see anything, like bright headlights in a heavy fog. What am I missing that this option seems so popular that many pistols today throw the rail in for free.?