User blog comment:Mich, Michele & Kuhla/Future Units Preview/@comment-124.106.157.63-20150827172831/@comment-5184934-20150829143520

No it's actually 7 at max:

1(Base)+2(UBB)+2(Ark BB)+1(LS)+1(LS) = 7 Hits

Because they are not multiplicative but additive.