If it is not spelled out, then they don't have it.
Here is from
http://www.friendlyfire.se/asl/errata/
Question: Why do you mentioned the Vehicular MGs on some (but not all) vehicles? How does your notation work?
Answer: We always include enough information on the counter to allow you to uniquely identify which vehicle and optional armament to use among those available in the counter mix. We never let D1.84 come into play, so if you think you have a choice between two or more MG combinations, odds are you have not understood our notation.
If one or more MGs are mentioned on a counter in a FrF scenario, the vehicle needs to have those MGs and as few
as possible other MGs given the counter mix limitations.
EX:
FrF22 Wunderwaffe calls for a KV-1 M41 with a "2FP AAMG". The KV-1 M41 counter with a 4FP CMG, 2FP BMG, 2FP RMG and a 2FP AAMG should be used (since there are no KV-1 M41 counter with an AAMG but anything less than the MG combo mentioned above in the counter mix).
EX:
FrF18 Through Fire and Ice calls for two T-26S M37s with "4FP CMG". Two counters, each with a 4FP CMG and no other MG should be used, since there are such counters in the mix. The same scenario has another T-26S M37, but with a "2 FP RMG". The T-26S M37s with a 2FP RMG and the least number of other MGs is a T-26S M37 with a 4FP CMG and a 2FP RMG. That one should be used.
In retrospect, we should have chosen a simpler schema.