rails and weapons...........?

Jammie Taddei: the M16A4 and the M4 come with rails systems in place of the rear site apature and on the barrel of the rifle. you can change out the rails on the barrel with the old school hand grip or put hand guards over the rails. you can also put a rear site apature over the rails on the upper reciever.

Davina Shindler: The rails talk to you? You need to get back on your med ASAP dude, and never ever go near a gun please