This innovative AR vise block is designed to securely hold basically any AR upper receiver. It will secure AR-15 uppers by engaging the takedown lugs on the bottom of the receiver. By reversing the
The AAIS Rail set, Part number BT20 consists of three pieces of 1913 rail that can be attached to the AAIS BT19 on the bottom and both sides allowing for a multitude of options including mounting of t