Attached photo is infantry support weapon from I think a US Vietnam sprue, I think it came with the Air Cavalry command set. I can't figure out what its supposed to be. A TOW launcher has a pretty constant diameter. A 90mm recoiless had the bulge at the rear but not extending way forward like this. It on a sprue marked "M20". No photos of this on GHQ website that I can find.
Actually, thats an Heroics & Ros figure from their Modern U.S. Infantry pack. I always just figured it was their version of a TOW launcher. Otherwise I have no idea what they were trying to recreate.
I bought a couple packs of these when I went to Salute 2014. The castings are slightly smaller than the GHQ variety and the poses seemed a tad stiff to me.
When in trouble or in doubt,
Run in circles, scream and shout!
H & R for sure. I have none of their figures at all now but did have them many years ago.
I still used their Gripen, Bv snow cats and the new Archer SPG.
The M20 is their Israeli heavy weapons pack. That sculpt is maybe pushing 40 years old.