The file '1 Piece Hand Stop 3D Printer Model' is (STL) file type, size is 586.0KB.
Hand stop compatible with standard MIL-STD-1913 rails. Put between two Magpul XTM panels, or print the screw model and attach where you want!
Hardware for screw model:
http://www.mcmaster.com/nav/enter.asp?partnum=90685A039
http://www.mcmaster.com/nav/enter.asp?partnum=92981A050