Video from Airsoftjunkiez showing the Airsoftjunkiez Custom PolarStar Jack GG SSG 1 USR. As its model name indicates, the new G&G SSG-1 is equipped with the PolarStar Jack HPA engine. Other ehnancements are the Speed Trigger, promi barrel 6.03, upgraded Hopup & Bucking, and 7.4v Lipo FCU battery. The package comes with 3 PTS SpeedQB midcaps.