I sprayed it straight with the Wagner. Went to Home Depot, told them the color I wanted...took it home, poured the paint into the Wagner jar, hooked the jar to the sprayer, and sprayed it directly...no thinning needed
(BE CAREFUL!!! When the Wagner starts getting LOW on paint, it will start shooting out a mess) When the paint jar gets low and you continue to spray, you'll get these blobs of paint splattering your truck...thats a PITA lol....other than that, its EASY! It takes me between 2-5 minutes to spray one side of the bed
Benefits...You can make ANY color imaginative right there at the Home Depot counter...so you can be sure your getting the correct military green. You can purchase more by walking into any Home Depot store any day of the week...unlike of paint shops, its durable and weather proof (Its exterior house paint)...Its made with a primer from the start...its CHEAP...
I've taken my truck mudding and off roading when I painted it tan...It held up with no problems at all....covered it in mud, the mud dried on the truck for a few weeks...pressure washed it off...Paint still held up great!