Just ordered mine from Amazon. WAAAY too much money ($18.95+$6.95 shipping) for a lousy tshirt,but there is a message that needs to be sent. With any luck at all,some leftie will try to take it off of me,so it might end up being money well spent.
Or you could take the way easy way, and argue for conscientious observer (objector) status.
I call that, just big talker status.
I listened to some of that type, during my service days. And listened, and listened, and listened. And listened, and listened, and listened. And listened, and listened, and listened.