https://mil-nsn-parts.com/parts-catalog/nsn/1720003158842-1720-00-315-8842-piston-assy.html
1720003158842, 1720-00-315-8842, 50627A1, 503227-1, 1720-00-315-8842 - PISTON ASSY | Mil NSN Parts
Piston Assy, 1720003158842, 1720-00-315-8842, 50627A1, 503227-1.