I think it much better than the one that looks like a hollow pile of crap. Now I hope they would add clay to rock resource, so that would explain what is holding the rocks together. Also with clay other things can be crafted like molds to place in a forge to create metal bars or molds for crafting weapons. I know I posted this before but I believe that crafting an M4 should be done as such.
Loot an M4 and bring it back to your house
Disassemble it down to its main parts… Stock, Upper receiver, Lower receiver, Barrel, Bolt, (Firing pin, trigger assembly)
Then make a mold of each and place them in a forge with L.Q.M or Metal frags take them out.
the stock,grip and hand guard could be crafted from wood.
Take all your pieces to the work bench and reassemble it.
you could also have parts break or get damaged when trying to disassemble the weapon figuring that you guys is practically a cave man rediscovering lost technology and improperly breaking the weapon down
Just some ideas to make it a bit more realistic and drawing out the end game some more as well as making gun fights more intense and interesting, because you sure as hell don’t want to lose that weapon after all that shit lol.