The 5.56mm M27 Infantry Automatic Rifle has remained a favorite rifle of the Marine Corps for the better part of this decade. Based on the Heckler & Koch HK416 assault rifle and adopted in 2011 to replace the M249 Squad Automatic Weapon, it’s widely considered more versatile and accurate over a longer range than the average weapon — so much so that the Corps has even discussed replacing every infantry Marine’s M4 carbine with an IAR variant in coming years.
Benjamin Franklin nailed it when he said, "Fatigue is the best pillow." True story, Benny. There's nothing like pushing your body so far past exhaustion that you'd willingly, even longingly, take a nap on a concrete slab.