SUB5 is based on a concept I thought about for years which actually became SLS Nylon PA12 printed reality after tons of development and prototyping. Look no further in case you want to get all your HPA engine firepower in a pistol-like body that weighs under 500g and handles easier and more stable than any other pistol out there. You got tons of color options to choose from, based on the now available black and white lowers there are 128 different color combinations available!