UltraBlue Pro Kit - Gun Lubricants The UltraBlue Pro Kit is the perfect combination for firearm maintenance. The kit contains (1) 3cc syringe of UltraBlue Penetrating Gun Lube and (1) 1 oz bottle of Microlon Gun Juice. Improve performance, smoother operation, and protect your firearms. Everything you need all in one kit. Microlon Gun Juice and UltraBlue Lube have temp range of -100F to +725F 18%+ Accuracy Improvement Improves Trigger Performance and Provides Excellent Lubrication