The Pro Arms CNC aluminum RMR mount for the SIG Air P320 M17 / M18 / XCarry GBB is a single piece designed for the mounting of the RMR style optic on the pistol.
Compatibility:
SIG Air P320 M17 / M18 / XCarry GBB Pistol
Includes:
x1 Pro Arms SIG Air M17 / M18 / XCARRY RMR Lightweight Mount Base (CNC Aluminum) - Black
Good fit secures red dot very well. One problem. Missing the center mounting screw. So far after loctite on the two outside screws it seems to be holding tight. Time will tell. Should have sent all 3 mounting screws.