Soft Fiber Magazine brush - I keep one of these sprayed with silicone in a zip lock inside my range bag.  Perfect for running thru the mag after using the hard brush to remove the dirt and grit.

The original Arredondo mag brush.  Hard bristles sweep away dirt and grit.  Use as step one in your mag cleaning process followed by the soft bristle brush below coated with silicone. 

This is the mag brush to keep your single stack mags clean.  Fits all 9mm, 40, 45, and 10 mm single stack mags.