On guns section, under "mode" what does the abbreviation BF mean? or SS?

BS = Burst Fire
SS = Single Shot
SA = Semiautomatic
FA = Full Automatic

(at least, that's as i remember them, without opening the book) =P

SS = Single Shot. Only takes 1 Simple Action to fire one shot, but only 1 shot per action phase is allowed, even though you have another Simple Action coming to you.

SA = Semi Automatic. Takes 1 Simple Action to fire, may be fired twice per action phase. Second shot that action phase has a +1 recoil mod on it.

BF = Burst Fire. One burst is a simple action as under SA but with a bit more recoil.

FA = Full Auto. One full auto burst is a simple action, as under SA but with a lot more recoil.

See Combat section, pages 142-144 of the BBB for more.

Tanks Much! I figured it out about five minutes after I posted and I have been busy playing untill now. IT it greatly appreciated to get feedback!!