Coalition forces fire an M3 multi-role anti-armor anti-tank weapon system on a range during training in Washir district, Helmand province, Afghanistan, March 23, 2013. Coalition forces reviewed their weapons handling and firing techniques to increase safety, accuracy and familiarity with the weapon system. (DoD photo by Sgt. Benjamin Tuck, U.S. Army/Released)
Just a perfect, colorful snapshot of soldiers training with the 84. For more on the Carl Gustav in all its incarnations, Wikipedia has a pretty nice write-up on this popular recoilless rifle.
Hat tip: Military Times