i beleve this is a modeling thing and i dont think sapphire knows how to do that. Mainly because you would have to make the game realise there is a fourth barrel, then make the game model that fourth barrel without it being placed wrong or floating, then make the game realise that the fourth barrel is functional and can shoot, then you have to make the game shoot all four barrels properly without the gun not bugging out (i.e only the fourth barrel rotating or not rotating, the gun firing all barrels not just 1-3 or just #4) its a long process that is very difficult because its adding a whole new feature to the game rather than modifying one thats already there (as four barrel tech for the smaller big guns doesnt exist in game).
Im not answering for them im just using the knowledge of what they do so they have something to quote and say this is right or wrong because of this or that.
Sapphire can correct me if im wrong and ill be glad to accept that im wrong but in any event this is just here to be a quote so that they dont have to type it.