The Fixed Sight Top Rail is also your barrel wrench and storage for the 3/32 takedown wrench. Great to have as a backup- if you strip your existing barrel nut wrench or like to play with point of impact. A Great Accessory for those who like to file the rear sight DOWN to bring point of impact CLOSER. Standard Top Rail is set for High Velocity Point of Impact at 50-75 Yards. Buy the ZiPPIC Rail (1913 Rail) for attachment of any "heads-up" red dot, etc.
