DIY 20mm Cannon with remote Electronic Trigger

20mm rifleJosh 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 […]

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