HK Army HPA Tanks: None HK ARMY 36CI / 4500PSI EXTRA LITE CARBON FIBER TANK - BLACK HK ARMY 36CI / 4500PSI EXTRA LITE CARBON FIBER TANK - Icon Blue HK ARMY 36CI / 4500PSI EXTRA LITE CARBON FIBER TANK - Icon Gold HK ARMY 36CI / 4500PSI EXTRA LITE CARBON FIBER TANK - Icon Purple HK ARMY 36CI / 4500PSI EXTRA LITE CARBON FIBER TANK - Icon Red HK ARMY AeroLite 68/4500 Clear HK Army Aerolite 68/4500 Red HK Army Aerolite 68/4500 Blue HK ARMY AeroLite 68/4500 Smoke HK ARMY Doom - Extra Lite 68/4500 Black/Gold HK ARMY Doom - Extra Lite 68/4500 Black/Neon Blue