Yes
No.
for a rifle it is thought to be a .50 calibre but a gun company made there own for there own sniper rifle the .408 calibre
Yes, it is possible to own chickens in NYC, but there are specific regulations and guidelines that must be followed, such as obtaining a permit and adhering to zoning laws.
Requires professional appraisal
Each one has its own unique characteristics
18 years.
yes
No
Depends on where you are.
no
no.
yes, you can and need a license to own an airsoft gun in nyc.