Quote Originally Posted by t209 View Post
I mean which of many chapters are playable in Death Watch, like Salamanders (though they may have pet peeve on other spacemarine gunning down imperial citizens) or Imperial Fists.
Oh! You're referring to the Deathwatch RPG by Fantasy Flight, and you want to know if there are RPG rules for being a Deathwatch marine from different chapters, like if you were playing a Salamander you'd get +15 to Punch attacks or something.

I cannot answer this question, but I suspect that the folks over in the 40k RPGs thread in other gaming thread may have more answers for you