https://www.milsurps.com/images/impo...enj8rx2w-1.jpg
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They're shooting both. Middle man, you can see the shell leaving the rifle. Both riflemen have dust moving up in front of the muzzles.
Maybe frontman's shell is about 10 cm over the rifle? Not sure... Might be earth on the background.
Recoiless in a canvas case in front...
Jim-- Looks like a 75mm M20 Recoilless Rifle.
https://upload.wikimedia.org/wikiped...less-rifle.jpg
Sergeant Reckless, a decorated war horse serving with a US Marine Corps recoilless rifle platoon in the Korean War, stands beside a 75mm recoilless rifle
It Seems long to me for a recoilless rifle case - I always thought it was a coincidence Rangefinder given the symmetry of the case. could not find an image of a recoilless rifle case and all the field photos show them uncased. Maybe an M40 recoilless rifle
M40
209.5 kg (462 lb)
Length 3.404 m (11 ft 2 in)
Height 1.12 m (3 ft 8 in)
M20
Specifications
Mass 103 lb (47 kg)
Length 82 in (2.1 m)
Barrel length 65 in (1.7 m) 5' 5"
Crew 1 or 2
https://www.milsurps.com/images/impo...enj8rx2w-1.jpg
Turns out it's the M123 case for the 57mm recoiless. Thing is, someone here has the book on this little recoiless and is hiding it.