M4 screws with a diameter of 4mm

▸ Accessories list: Muffler | 4x Optics | Magazine | Goggles | Straight grip
▸ Power configuration: 7.4V lithium battery | Dedicated charging cable
▸ Water bomb capacity: 1000 rounds 6mm specification
▸ Adaptation type: Standard rail interface
▸ Safety components: ANSI Z87.1 certified goggles