Here's the wireframes. I put soft edges on the low poly and changed the lambert to a blinn. The bottom of the model isn't high priority as this is a stick on piece.
The cylinder looks super soft, this is really noticeable on the cylinder stop. And it's also modeled wrong, it looks like you have to shift the cartridge holes.
Do a levels adjustment and crunch the levels together then bring down the brightness. Start with that then sharpen things up. It's all looking real soft atm.
No, if you try that it'll just end up blobby and soft looking. You have to define the curves with topology, the turbosmooth is just there to smooth it out.