These are all true, based on owning each.
AK Jammed: Somehow an empty casing got thrown
behind the hammer. Gun didn't stop until a shard of what was left of the casing cut my finger through the trigger hole.
AR Jammed: 1/32 ding/dent in magazine.
MN Jammed: Fired 170 rounds off in a row. Enough metallic swelling prevented bolt from working (never mind the bolt handle was too hot to touch with bare hands).
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AK ammo: Made in 1982, packaged in cardboard box with paper dividers.
AR ammo: Made in 2008, packaged in cardboard box with specially-formed plastic preventing any single round from touching another.
MN ammo: Made in 1946, packaged in paper tied with string.
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AK disassembly: Push in button, remove cover, remove spring, pull out carrier, bolt drops free.
AR disassembly: Push in button, break rifle open, pull back charging handle, pull out carrier, pull out cotter pin, firing pin drops out, push bolt in, rotate lug pin and pull it out, pull out bolt.
MN disassembly: Hold down trigger and open bolt.