It will be a 4M if it has the built in lightmeter, the 4AM has no lightmeter and looks classically svelte in shape.
You can tell if it is these last model RF classic Kievs by the rewind crank, hotshoe, visible shutter speed numbers on the wind dial and open latch on the baseplate that does double-duty as a rewind clutch activator.
The plastic leatherette is cheap quality and peels off easy and the overall quality feel of the camera body is very bad when compared to pre 1973 Kiev RF cameras based on the classic pre-war Contax III and II.
Simplification of the complex design that required a lot of professional hand fitting and cheapening materials and to make this model quick and in great numbers to meet Soviet politburo mandated quotas was a recipe for disaster, usual for Soviet block consumer goods, more so thru the 1970s and 80s than say in the 1950s and 1960s.
Compare the quality of an early 1950s Kiev II camera to a 1982 Kiev 4AM camera and the difference in quality is night and day...the Kiev II was very close in Zeiss design specs and materials, feel and quality to the exquisitely made Zeiss Contax II .
The best thing about these last models was the fine preforming Helios 103 50mm lens that came with these last made RF Kievs.