Set includes:
1 - M-40 Recoilless Rifle barrel - rifled end
1 - M-40 Recoilless Rifle breech
1 - M-40 Recoilless Rifle breech door handle
1 - M8C .50 Cal Spotting Rifle (Integrated)
1 - M-40 Recoilless Rifle mounting fork
1 - "Wheelbarrow" Tripod (rotates 360 degrees with some elevation)
1 - Tripod wheel (Rotates)
1 - M-314 Ammo storage tube
1 - M-314 Ammo storage tube cap
1 - M-40 Recoilless rocket
1 - M-40 Recoilless rocket casing
1 - Metal bolt

Click here for the additional Ammuniton Set.
 
The M-40 was primarily used in the Vietnam War.   For WW2 and the Korean War use the 57mm M-18 or 75mm M-20 Recoilless Rifle.