Sydney man charged after bashing teens

A Sydney man has been charged after allegedly bashing two teenagers and threatening one of them with a gun.

Police say the 27-year-old man ran towards a pair of 16-year-old boys sitting outside a Campbelltown pub, in Sydney's southwest, about 8.10pm (local time) last night.

The teenagers were said to be waiting for a relative inside.

The offender allegedly punched one of the boys in the face and assaulted the second after he tried to break them up.

Both teenagers fled the area, but one of them returned a short time later to meet his relative.

Police said the 27-year-old, who was driving a ute with a male passenger, then confronted the boy a second time.

The two men chased the 16-year-old as he tried to run away and assaulted him in the frontyard of a house. They also threatened him with a gun.

Both men fled in the ute, which was stopped by police a short time later. Officers seized the gun and arrested the 27-year-old.

He was charged with affray, being armed with intent to commit an indictable offence, low-range drink-driving and firearm offences.

He was refused bail to appear in Parramatta Bail Court on Saturday.

The second man managed to flee the area on foot.

-AAP