IndyGunworks
Grandmaster
I sold Tophat45 a sliding parallel guide for taping the vent ribs of shotgun barrels. He wanted to drill and tap the top of a browning high power but my tool was tool small... (sorry Darrel no refunds). He decided to use my tool as a model to make a much larger one that will suit his needs better.
Here are a couple of pictures of the tool from Brownells.
And here is Darrel's that's at least twice as large
Here are a couple of pictures of the tool from Brownells.
And here is Darrel's that's at least twice as large