Go at it with a REKT OpFour Co2 foam dart launcher that shoots darts faster and farther! The REKT OpFour dart rifle has a 12-dart magazine and uses 12g Co2 cartridges that give this blaster its power. The Co2 cartridge loads in the back of the OpFour dart rifle just inside the rear stock tube. There's no spring to operate it, so it's easier to operate! Just pull the fore-grip to load your next dart and pull the trigger. Just make sure you stock up on Valken 12g Co2 cartridges, REKT darts, and Valken eye protection so you are ready to get REKT!