u/Inevitable_Exam_5797

Hey everyone, just doing some reading on the Al-Yassin 105 rockets Hamas has been putting out in Gaza. It's obviously a pretty serious homemade tandem-charge weapon, often cited as a hybrid of the RPG-2 and RPG-7. It's impressive they are punching through modern armor, but I'm struggling with the logistics behind it. Usually, these sorts of DIY rockets are propellant-hungry. I know they've historically used black powder or homemade rocket candy ( + Sugar) for their smaller RPG-2 clones, but for a 105mm rocket that needs to travel over 200m to engage armor, those wouldn't cut it. Is it plausible they are actually manufacturing their own double-base propellant (nitrocellulose/nitroglycerin) in underground workshops, or are we looking at something else? I feel like producing stable, consistent double-base propellant in tunnels is a huge step up from just packing rocket candy. Does anyone know what they are likely filling the rocket motor with, or have any insight into their propellant manufacturing capabilities? Thanks!