I settled upon making a stagecoach style nerf gun for Cowboy Action Nerf Shooting. It is easy enough for anyone to do and can be complete in under two hours.
Step 1: Paint the Stock
Clean off the stickers and rub the entire surface with a mild abrasive such as a scotchbrite pad. Then paint the stock, you don not even need to mask anything since the next layer of paint can cover any overspray from the first coat. I am using Krylon Fusion brown. It is formulated to bond to plastic.
Step 2: Paint the Barrels
I am only painting the barrels and break open lever. With more care I could also paint the trigger and trigger guard.
I use automotive wheel paint since I like its metalic look. This is duplicolor, but other brands work well too. Within thirty minutes you can remove the masking tape and it is ready to use.
Step 3: Use Your Stagecoach Gun
Go out and do your cowboy best.