This product is a 1:6 scale set of a WWII Navy Gunner Twin Mount Anti-Aircraft 40mm Gun from the G.I. Joe franchise. It includes a gun and two figures, one of which is the gunner character. The set is made of plastic and was manufactured by Hasbro in 2000. It is a vintage, original product and does not come with packaging. The theme is military and adventure, and the time period of manufacture is 2000-2009.

I believe the set is complete with the exception of one of the hand crank wheels. Please see the pics to confirm.
A previous owner wanted to have the figures be part of a bloody massacre, so there is red/pink marker on the figure and clothes. I tried to get some off of the figure, but there is still more scrubbing which will need to be done.