The New Gen eight M4A1 is a top rated-of-the-line gel blaster, made up of casted metal gears and metal piston, a metal internal barrel and a higher toughness gearbox when compared with the outdated version of Gen 8. With improved operation and increased sturdiness. Expandable and m4a1 gel blaster ipswich Upgradeable: GBG blasters give you a wide