Micro-Mark Air Undercoat Light Gray Paint, 20ml

• Pre-thinned for airbrush application—no dilution required
• Smooth, neutral gray base ideal for layering lighter or mid-tone colors
• Excellent adhesion on plastic, resin, and metal miniatures
• Fast-drying, low-spatter formula for even base coverage
• Used in Railroad modeling for sidewalks, loading docks, retaining walls. Great for rolling stock including boxcars, gondolas, and cabooses.
• Made in the USA

Description
Air Undercoat Light Gray is a ready-to-use, airbrush-optimized version of our versatile primer-gray tone. Designed to enhance coverage and boost tonal accuracy in subsequent paint layers, it provides a consistent matte surface that grips acrylics beautifully. Perfect for pre-shading, volume definition, and even standalone use in industrial or military models.

Modeling Use Cases
• Base Coat for Miniatures: Enhances whites, yellows, and pastel tones
• Military & Sci-Fi Builds: Aircraft bellies, drone hulls, mech underframes
• Model Railroading: Structure foundations and equipment undersides
• Custom Kitbashing: Universal tone for scratch builds and conversions

Tips for Best Results
• Spray in thin layers at 15–20 PSI for optimal control
• Shake well and stir before loading into airbrush
• Use with Micro-Mark’s Acrylic Paint Thinner or Flow Improver if needed
• Ideal under metallics, camouflage, or weathered finishes

Micro-Mark Acrylic Airbrush Thinner if needed for custom blending. Air Undercoat Light Gray is available in the Airbrush Railroad Acrylic Paint Set.