Set includes:
1 - M-40 Recoilless Rifle
1 - Tripod (rotates 360 degrees with some elevation)
1 - Ammo storage tube
1 - M-40 Rocoiless rocket
 
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.