Here's something you don't see every day: Linked 5.56x45mm NATO Ammo from Magtech®, typically reserved for belt-fed firearms like the M249 light machine gun. Each round is linked with the military-spec M27 link. Each M27 link consists of a single piece of metal curved into 2 partial cylinders, and rounds are extracted by pushing forward out of the link. Military standards stipulate that the force to strip a NATO-approved round from the M27 link should be between 5.5 and 16 lbs. In every other way, these are standard training rounds for your AR-15 or M16. Comes with steel ammo can as well.