Noob question.
I just got my
DV box set and I am working away on my
DA. I have been reading on the forums about shooting and I noticed a few comment regarding
Tac Squds and shooting and they seemed to be saying that their marines were getting (it appeared) 4 shots each. i can't find a rule about that anywhere in the new codex. now it may be the pain management talking

(or general idiocy), but I can't find this rule anywhere. Is it
DA specific, not exist or in the 6th ed I have not noticed... as if a boltgun is 2/4.