what works for your friend will have to be found through experience and data, not a bunch of random people on the 'net
What state...the issue is if he can shoot well enough for his CC license. In his home state, you need to hit a smallish target from 20 yards???
So a lazer would work for the CC test at an indoor range but would not be useful at an outdoor range in the direct sunlight?
His eyesight is not that bad and he recently got a driver license and his eyes were tested at the DMV....
More like $400 these daysThe RMR cost hundreds
Not necessarily, in Texas you can still drive even if you need a 4x magnifier to pass the test! Can you imagine driving while looking through 4X binoculars. These glasses are sort of like bifocals but with little 4X telescopes where the reading area would be.If he can drive, his eyesight isn't that bad.
For a Glock you can get a mount that replaces the rear sight, it sits a bit higher but you can restore the gun to its original config if you decide to carry something else and keep the expensive RMR for your new pistol. The mount is like $60-70 compared to $200 for the slide milling.
More like $400 these days