Stun gun
blomi 2PCS is a combination cartridge launcher and photon particle assault rifle. Features of the gun included a photon accelerator, cartridge launcher, target beam diode, power ??? and of course trigger mechanism and safety.

Mercury was armed with that weapon when sent to assassinate Dr. Enrique Castillo and with is he shot Agent 5. After he was incapacitated by Agent 5 he carried it with him and used it to stun Elliot Sinclair before assassinating the Cyrollan ambassador.