The FN 303 uses compressed gas to fire projectiles designed to incapacitate the target through blunt trauma without causing death. It is most widely used for riot control and other kinds of combat where the target's death is undesirable. The 303 can be fired from the shoulder with the aid of adjustable sights, or it can be mounted in an undercarriage configuration on most assault rifles, provided its stock assembly is removed (in this configuration, it is designated the M303). It also comes with a top-mounted Picatinny rail that can fit most commercial weapon accessories, including scopes, lasers and tactical flashlights. FN markets its own set of accessories for the weapon, including tactical vests, slings, carrying bags, and gas compressors.
Ammunition
All types of FN 303 ammunition contain a non-toxic bismuth forward payload. The ammunition is designed to fragment upon impact to prevent penetration damage. Secondary rear payloads vary depending on mission requirements. The types are:
It also gives the user a new capability in the form of an inert kit containing the components to tailor-make various explosive charges and securely employ or attach these charges to targets which is critical for mission success and user survivability.
The centerpieces of the M303 Kit are the new EFP warheads that provide a standoff capability, previously not available to the SOF soldier, to defeat hard targets.
The M303 was developed for and will be issued exclusively to the Army proponent within the Special Operations Command.