A reference model for the clamps used in the Ghost Gunner's to hold the AR-15 Non-Receiver Block for milling into a Zero Percent Receiver. They are designed to securely hold a piece of 1.5" metal bar stock.
Blueprints of this item can be found here.
These clamps are not printable. They can be purchased as part of the Ghost Gunner Zero Percent Starter Kit at https://ghostgunner.net/product/zero-starter-kit/.
Learn more about the Ghost Gunner Zero Percent Receiver at zero.ghostgunner.net.
Updated to Rev B - extends upper jaw, adds two additional M5 holes.