omg, when larry vickers said that he once saw an an94 jam and it took "three men and a boy" to clear, i get what he means now. i had a double feed that very quickly turned into a triple and quad feed jam
i really like this, that trrap door is super fun and novel, my only suggestion would be to add some sort of locking mechanism, that will prevent the barrel recoiling the way it does. 10/10
look there's a saying "there's nothing new under the sun" most of my designs are directly inspired by real world mechanisms i'm just assembling those peices into new combinations tbf that is essentially what real gun designers do, very few moden firearms use new unique mechanisms. so use these as a way to learn and you can make your own with time and effort.
my bad for taking so long to get to this one but this is really creative, the modifications you've made to the ammo is very cool, im impressed great work!