The latest gun used by the Air Force to arm its fighters is the M61A1 Vulcan. This cannon is a 20mm rotary type used on every fighter from the F-104 onward.
This little gem contains six turned metal barrels, metal mid-barrel spacer ring, and end barrel clamp spacer. There is also a fret of photo etch which has the cooling fins and barrel clamps.
The hardest parts will be assembling the cooling fins on the end barrel clamp. After that, it is gravy and more realistic than anything that plastic can do.
Highly recommended.
Thanks to Master Model and IPMS/USA for the review copy.