The M4 is a smaller version of the M16. It has less range, but it is better for urban combat.
They were not really social to eachother , other then the trading. other than that , they dont really like eachother because theyre both "different " hope this helps
Theyre is millions go to toys'r'us and buy a pack for $3
because of theyre bone structure and theyre feather covering
theyre cool
Because theyre idiots
because theyre solid
Because theyre basturd
because theyre idiots
because theyre girls
No because theyre stupid
because theyre losers
because uhm theyre awesome