Original German WWII Late War Heer Army Panzergrenadier Enlisted Man's M40 Field Combat Tunic Featured Item and has a single "cheese-head"

and has a single "cheese-head" securing screw on the upper narrow side

Richmond and Schuyler

Waldhausen

As seen in the fantastic book Knuckle Knives of the Second World War by Greg Aloisio on page 299

indicating that it is definitely chambered for

Original German WWII Late War Heer Army Panzergrenadier Enlisted Man's M40 Field Combat Tunic Featured Item and has a single "cheese-head"Original Item: Only One Available. This is a very nice service used late war pattern German WWII Heer Army Panzergrenadier Mannschaften (Enlisted Personnel) M 40 Field Tunic, a more rugged and simplified version of the M 36, intended for real combat use. Gone is the "bottle green" collar, and the overall construction is more rugged, using a rougher weave feldgrau wool on the exterior. The tunic features four pockets with square flaps and pebbled