This is the 37mm gas gun made by Manville. This model is very rare. A brief history can be found at This gun clearly shows its age, but the rust is just on the surface and probably could easily be cleaned up. It appears to be in good working or, but I am not 100% sure of that. I have no way of testing it or have any ammo for it. It does come with a very tattered piece of paper with instructions (see photo). This is big and heavy, and while I have never fired it, this is clearly NOT for the faint of heart. This does not require an FFL so I will ship it directly to you. You can see my feedback on ebay (chaz1), over 400 positive, no negative feedback. As soon as I get you payment I will send it out UPS tracking and fully insured. Will take a check but it takes time for them to clear. Please feel free to message me with any further questions, I’ll do my best to answer them. This is for sale locally so it may be pulled at any time. Shipping is flat $120.00 to the lower 48. AK and HI please send me your zip code for a quote. NO international shipping.