As titled, I am going to finish my sierra with every part either zinc plated or sprayed in 2 pack. Just wondering what gun I should use, and any reccomendations. Would a touch up gun be best for parts as it would give a good finish without much waste? And gravity fed I presume for less waste? Or wouldnt it matter? Any reccomendations? And on the side, after sandblasting parts, how should I make sure there is no silicon particles on the blasted part?