What distinguishes the M200 Blank round of ammunition for the M249?

The M200 Blank round for the M249 is specifically designed to simulate the firing of live ammunition without propelling a bullet. The distinguishing feature of this round is its violet tip with a seven petal rosette crimp. This unique marking is essential for visual identification on the range and ensures that personnel can easily distinguish blank ammunition from live rounds. The rosette crimping technique helps to ensure that the cartridge retains its integrity during firing while allowing the propellant gases to escape, producing the characteristic report of a firearm without launching a projectile. This is important for training scenarios where realistic firing conditions are needed while maintaining safety.