system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why is the AK-47 widely considered one of the best guns ever made?
gpt
The AK-47 is ridiculously simple.  It has only 4 main, parts, their production tolerances are very high so it's inexpensive to make, and dirt/grime/residue won't cause it to jam.  For all of its stupid simplicity, it still fires accurate enough to hit something 300 meters out, fires fast enough to be deadly at close range, and fires a bullet large enough to do a lot of damage.

There are guns that can fire faster than the ak-47, that are more accurate than the ak-47, that have better sights, or are lighter, or whatever else, but hardly anything else is as:

1) Effective

 2) Inexpensive 

3) Durable enough to withstand years of service in shitty environments with minimal spare parts and still work.