[runer60000]

if someone assaults a unit of pirahnas with flechettes, wouldnt each enemy model take a wound for each pirahna thats in the unit?

[Shas O Behavva]

If you choose to play by the INAT FAQ's then:
TAU.30D.01 – Q: How do Flechette Dischargers work when fitted to a vehicle squadron?
A: If one or more vehicle in the squadron has a Flechette Discharger then any models attacking the squadron in close combat will suffer a single wound on a D6 roll of ‘4+’

Alternatively you could choose to play by a somewhat popular interpretation of the RAW, assuming your opponent agrees, which basically means for each piranha equipped with a flechette discharger you would roll a number of dice equal to the number of models in the attacking unit. 5 flechette piranhas being assaulted by 10 marines would equal 50 dice.

[juraigamer]

Another option is to measure 2" from each piranha's hull to the nearest enemy assaulting model. For each in range they get their launchers on however many models are assaulting that unit. My opponents have agreed on this method for the time being as we generally view it as being fair to both parties.

[hardcore]

Originally Posted by Shas O Behavva

Alternatively you could choose to play by a somewhat popular interpretation of the RAW, assuming your opponent agrees, which basically means for each piranha equipped with a flechette discharger you would roll a number of dice equal to the number of models in the attacking unit. 5 flechette piranhas being assaulted by 10 marines would equal 50 dice.

this has been generally accepted in all competetive games.

depending on whether I want ot have fun orjust play for the win will determine whether I use the rule this way or just do as suggested and let anything within 2 inches of the model hit. when I do it this way though, only models that are within two inches are able to be wounded ie if no 50 dice, then no five dead piranhas

[Shas O Behavva]

Originally Posted by hardcore

this has been generally acceptad in all competetive games.

Sorry, but that's absolutely not true. Whether or not you play it that way in your competitive games doesn't change the fact that it's in the INAT FAQs. Many tournaments use those FAQs.