Merry Christmas, Happy Holiday!
Have you installed the rail yet? After reading another thread that mentions that sometimes the mounting holes fail and strip, I was wondering if installing the rail is a job for a professional gunsmith.
I am also thinking that maybe its a good idea to mount only a straight rail for sights instead of something that holds shells as well. Any way, I still want a rail put on. The M4 looks like it comes with a rail in front of the ghost ring sights, maybe someone with a M4 can suggest something.