3Mâ„¢ PPSâ„¢ Adapter converts paint spray guns for use with the 3Mâ„¢ Paint Preparation System (PPSâ„¢). Specifically designed adapters, allows Painters to use the PPSâ„¢ with virtually any spray gun model. To use this adapter, remove the existing spray gun cup. Then simply thread the correct PPSâ„¢ adapter into the Spray Gun.