Whatever that is, it only extends forward, that’s not how rpgs work. They also don’t extend that far forward. The position of the guy doesn’t look like a firing position (one knee down, one foot on the ground for stability), it looks like someone on both knees pleading for thier life. If there is better footage, maybe we could say what these things are, but the problem with using Israeli or Zionist’s word about anything is that they only lie about these things. Edit: it could possibly be a rifle, or it could also be a walking stick. Or it could even be a bit of the buildings laying on the ground.