Homemade Shotgun Derringer .410

This pistol is based on Professor Parabellum’s Practical Scrap Metal Arms plans, with every part beefed up to handle a 3 inch .410 cartridge. I don’t recommend trying this since there is much less room for error in its construction. You can get away with bad design and fitting with a .22lr. I wont be making another project like this since it takes too much time away from my GG92 compensator production. I began the project about 2 years ago and put it on hold to focus on work. I put very little care into precision and finishing just to get it finished and out of the way. This item is totally legal aswell. It is rifled, making it a handgun, not an SBS or AOW.