DIY 20mm Cannon with remote Electronic Trigger

By Steve Johnson

Josh writes … I recently completed a home-made 20x102mm (20mm “vulcan”) destructive device, registered on an ATF Form 1. This gun is a single-shot, breech-loading firearm that lobs out a ~1520 grain inert steel projectile at an estimated 3100 feet per second. It’s locking mechanism can be nest described as being a very crude “falling…Read the Rest

Source:: The Firearm Blog