Q&A for How to Paint Your Airsoft Gun

Paint generally sticks better on rough uneven surfaces, so yes, you can sand it down, but do with care or you risk damaging your gun. Sanding with fine sandpaper is a necessary step in any properly done paint job that you hope to last a long time, unless the sandpaper is too rough, it will not damage the plastic. Otherwise, the paint will stick fine to unsanded plastic (or metal), you just might have a problem with runs in the paint. If you follow the directions in this tutorial, you shouldn't have any problems.

Matte spray paint. I recommend Krylon Fusion. Also, you might want to use a clear coat to protect the paint from chipping.

Any color that you have and want to paint the gun should work. Make sure you follow the directions carefully.

No, the paint will not melt. If you want to take extra measures to keep the paint on, make sure to use primer, and you can use clear coat.