So I am currently in San Antonio, TX training in the USAF Security Forces Academy. I have a new favorite weapon, actually 2. I have shot the M4,M16 w/M203, M249 SAW, M240B, and the M9 pistol. Gotta admit that the M9 was much better than what i was expecting. Shot very well, and kept tight groups without any jams. But my favorite is definitely the M240B... ooooh man! Nothin like slinging 200 rounds/min of 7.62 lead down range. the m249 saw is what I am carrying throughout training though, which is still a badass weapon. Trying to clear a building with it is a bit of a bitch though... but the firepower in a room is amazing.