105mm

Hi is the build quality of the Nikon 105mm Macro of high grade I.e. is it constructed by metal? And does it feel sturdy in the hand? I understand the gold ring on top indicates it’s a professional Nikon Lens, so I would assume the quality was good but just want to know for sure. One reason I ask...

I'm looking for a lens Pentax 105mm F2.4 67 Any idea how to find the old fab lens?