Original U.S. Colt M16A2 Rubber Duck Molded Training Rifle with Blank Adapter Marked TSC Devices, Ft. Knox, KY. Display Guns & Parts Sets The rivet-retained wooden grip is

The rivet-retained wooden grip is rectangular

and we can see that the left barrel wall is a bit thicker than the right

Most likely this helmet was a battlefield pickup after the war

all of the buttons and straps are intact

but it does not subtract from the beauty of it

Original U.S. Colt M16A2 Rubber Duck Molded Training Rifle with Blank Adapter Marked TSC Devices, Ft. Knox, KY. Display Guns & Parts Sets The rivet-retained wooden grip isOriginal Item: Only One Available. Colt M16A2 Military issue non functional RUBBER DUCK training and parade rifle. Features genuine M16 components, held together with resin construction. This example retains an original blank adapter. NOT AVAILABLE FOR EXPORT. The military calls these rifles Rubber Ducks. This is an actual military issue trainer designed to be the correct weight and size of an M16A2. They are made from decommissioned M16 A1 A2 parts,