You'll have to order them from Brownells. No one that I know of carries them for sale. You might find a gunsmith with a set in the caliber you want to check, but he more than likely will charge you for checking the headspace. Good luck.. Blitzfike
Midway or Brownells will have them on your doorstep in 3 days. What cailber you looking for? If your doing an AK or FAL I can let you borrow mine but I don't want to get rid of them.
