Blue Guns are inert training replicas only. They are not real firearms, are non-functioning, and are intended strictly for training and instructional purposes.
A blue gun version of the designation you gave refers to a non-functional training replica modeled after a real firearm design. These replicas are typically made from solid, brightly colored polymer and are used for safe handling practice, drills, weapon manipulation training, holster fitting, and scenario exercises. They are inert and cannot fire any ammunition. The shape and dimensions generally mimic the real counterpart so that users can practice gripping, drawing, reholstering, and other motor skills safely.
In this case, a blue gun labeled with a designation similar to �FSFNP90� would be intended to represent a training model of a pistol silhouette based on the look and ergonomics of the original design, for instructional and practice purposes only. It does not include any working internal mechanism, firing capability, or live components.