Magnetic Silencer Holder

You will need magnets 20x6x2 to make it stick to your gun cabinet.

To prevent scratches 150x80x0.5mm or 150x80x1.0mm adhesive foam pad should be used on the back.

Can hold gun silencers up to 60mm in diameter.

Can be printed in any material though PETG or ABS should be preferred because of the chemical resistance to most detergents. 

I printed in PETG with 4 outer walls and 20% infill.

Honeycombs on the inside make it printable without supports as long as your overhang settings are fine. Just place the part laying on the surface where the magnets go.