These Reaper Defense Flechette Ammunition 12 Gauge 2-3/4 28 Dart Shaped Projectiles 3PK are packed with 28 dart-shaped projectiles or "flechettes". The idea of a flechette round is that these can punch through brush or barriers that may normally stop or deflect regular shot pellets, such as thick underbrush. It is said that these rounds were used to defend against enemy snipers hiding amongst tree branches and leaves, as they pierce through some of the material that would deflect birdshot or buckshot.