Gel Ball Undercover show their customised "RAW M4" Gel Blaster which they sold before this video got posted... "In this video see Garner review the The "Raw M4" Custom Built Gel Blaster by GBU.

The Sleeper features some absolutely insane parts, including a full SHS Internal Upgrade, Leviathan V2 Mosfet, SHS Motor, and V2 CNC MK Metal Gearbox just to name a few. Laser accurate, this is a Monster."