blueing , also: bluing

A pro gun, and this one had long since lost its blueing.

He could see bare metal in places where the blueing was gone.

It is the blueing, not the greening, of the countryside.

It is sharp and strong, the blueing being achieved by the introduction of the Roquefort penicillium.

He gripped the rifle and rubbed the smooth metal, the blueing long worn off and the scarred wood of the stock.

The Remington bellowed, and the heavy recoil made its barrel scour against the edge of the iron plate, leaving the beautiful deep blueing of its steel behind.

But the gasoline had softened the blueing, which came off on his cleaning rag and streaked and dulled the uniform blue-steel shine that had defined the pistol he had always been proud to own.

An oilskin tarpaulin covered their gear in the flatbed; Jason hoped that the water hadn't gotten to everything important, although he was sure that the rifles were soaked, and would have to be carefully dried and oiled when they stopped, lest they rust through their blueing.