Depends on the model
The smallest BB is 4.5mm. As far as I know there is no 1mm BB gun.
A copper-plated BB weighs roughly 5.1 grains, which is equivalent to about 0.33 grams.
If you are asking about Airsoft BB shot in a regular BB gun that shoots metal BB, then the answer is NO. Real BB guns fire at a much higher rate than most Airsoft BB guns. The plastic BB could disintegrate and become flying pieces of Plastic.
Metal.
It all depends on the condition and model number of the BB gun
Not very much, unless if you use a metal buffer tube.
Check the Benjamin line of air guns at www.crosman.com. Benjamin make metal air guns. Also there is no such thing as BB bullets. BB's and pellets are fired from Air guns.
It would help if you stated from where you are sending from and where you want it to go. How large is it and how much does it weigh. DETAILS.
1.5 tonne
4 lbs.
5-10 pounds
The weight of a small metal ball can vary depending on its size and material. On average, a small metal ball can weigh around 1 to 10 grams.