No it doesnt which i find odd. In actual fact, if your weapon speed is maxed at 50, then when you use berserk, your fire rate actually decreases. I know this because i once used berserk thinking it would stack with my weapon speed stat of 50 only to find my fire rate decrease.
The fundamental problem is this: The first word we learn as children is NO. From that point forward society teaches women that saying no isn't polite, and society teaches men to respect those who wont take no for an answer.
The world is what you make of it, my friend. If it doesn't fit, you make alterations. -- Stella, The Morning Star