Suppressing the Scar 17

So I recently put in for a dead air Sandman S and, fingers crossed, should be getting it soon. In reading about suppressing the Scar platform I've heard it can be a bit rough on the gun. What exactly do I need. I have been told I need a new adjustable block, a new gas jet, as well as the shoulder ring. I've been thinking I'd get the DiSCARder. I also have been told what you need depends on what can you get. My question is do I need all this stuff, some, or none of it. The rifle will likely be shot supressed often but not always. I am running the factory 16 inch barrel.