[DustyPorViva]

Whether or not the gradient was a tool or done by hand, it's still a gradient. And in this case, if really done by hand, too much effort when it could have been spent doing better types of shading and coloring. I suggest using some slight gradients to round off metal cylinders and then topping them off with highlights. For the rest of the gun, remember that it's flat, so there's no need for gradients, but that's where you need to replace depth of shape with details.