It varies between types of loads, but on average, around 4 grams.
None. Modern weapons do not use gunpowder
should be 0.87477 grams (1 gram = .0647989 grains)
That depends entirely on how much of it you have.
Gunpowder varies from $15 - $20 American dollars for each pound.
No such weapon.
5.56mm packs a punch. It's stopping power is good, but a gun like the MG3 can easily outkill an M16 with its 7.62mm rounds.
In a way the M16 is a machine gun, but it can also do three round burst and semi automatic. civilians are not allowed to have automatic m16s unless you have an automatic weapons permit, but you can have a semi automatic M16. (an AR-15 is almost like an M16 and much cheaper if you're looking to buy one.)
8.5 pounds or more depending on how much attachments you put on it.
A M16 cost about $2000.00
The bullet energy from the AK 47 is higher than a round from an M16 or M4. That doesn't mean it is necessarily a better weapon. The AK 47 is very reliable but the M16 is much more accurate.
2 1/2 ounces
No such weapon made by Colt
Pretty much the rest of the world.