Background Pony #AA1F
To be fair helical magazines like these get jammed frequently. The Calico and PP-19 Bizon are examples. I do get that they do have more ammo but seems very impractical. Also the gun seems overly forward-heavy with that magazine, though I presume it has a folding stock.
To not mention that the ones supposed to use these kind of weaponry are, as far as I read; Kim Jong Un’s personal guards and special forces, both of which seem really bad to have a jam in the first place.
But at least it seems decently workable. I’m not sure if the same can be said about their ‘Anti Tank Grenade Launcher/AT Rifle’: