The correct sentence is He is allowed to do it on his own.
"on your own" is the correct phrase. It means to do something without any help or assistance from others.
The short answer is no, unless you have a firearms collector's licence. A fully automatic weapon is a restricted weapon and unless you have the correct licence you are not allowed to import them or own them. The collector's licence is difficult to get and restrictive.
You are allowed to own four dogs and breeding is not permitted.
He is allowed to join. You use the infinitive form in that case. :)
Your question calls for an opinion. My opinion is that people SHOULD be allowed to own a gun.
Slaves were not allowed to marry at their own free will. They were often forced to have children for their masters, even against their own will.
yes they be allowed
In Florida it depends what kind of duck you want to own. You are not allowed to own ducks unless you have a permit. Ducks are wild and you need a permit to own wild animals
Amtrak allows you to bring your own food and beverages onto the train. However, you are not allowed to drink your own alcoholic beverages in any public place, this is only allowed inside a sleeping car.
Michelle Obama is not allowed to own slaves
She was allowed to bring her own snacks to the movie theater.
Canada.............. This is not a correct answer. The correct answer is the province of Québec.