Airsoft is a hobby/sport/discipline, wherein replica firearms (pistols, assault and sniper rifles, etc.) that shoot 6mm plastic rounds, are used for personal collection, gaming (similar to Paintball), or professional training purposes (Military Simulations and Police training exercises). The difference between airsoft firearms and BB guns is that the former uses plastic bullets and have muzzle velocities that fire less than 500 feet per second (FPS) on average, which is generally considered safe/non-lethal when used in a controlled environment. BB guns (ex: Red Ryder BB Gun) utilize metal ammunition and shoots at velocities over 1000 FPS, making it less suitable for gaming and training purposes. Airsoft games vary greatly in style and composition depending on location, budget, and the quantity of participants but often range from short-term skirmishes and organized scenarios to military simulations and historical reenactments. Combat situations on the battlefield often involve the use of common military tactics to achieve the objectives set in each game.