Alright, let me see... From the left is NTW-20 (chibi-version), and then the tsundere T-dolls (I mean WA 2000), then MG5, beside her is FN FAL with her beloved animal (white, holding a fork and wearing a red scarf), then Russian KP-31, and the last one (right with Santa coat) is Ms.M1903.
EDIT: Wrong types, Suomi KP-31. And also, I'm hungry...