This is a CNC-cut bell airgun target in the shape of a bomb.
There are 3 aputures to aim for, each one has a different-sized bell behind it to chime a different ring when struck.
The hole sizes are 14mm, 22mm and 30mm with the target sitting on a standard Gr8fun Targets "H" base.
Overall dimensions are approx 275mm tall by 110 mm wide.