I picked this up on Ebay for 6 bucks shipped and let me tell ya, it works amazing! All that I had to do to modify it was drill a "peep" hole in it so that I could see my mark. The carto fits perfectly inside of it and does not deform or crush when it's punched. The only downfall to this, is that it will not work with the flanged cartos unless you somehow modify the outside of it.

