Man 'points replica semi-automatic rifle at police' through gap in door

A man has been arrested at the Sunshine Coast after allegedly brandishing a replica rifle at police before slashing an officer who attempted to subdue him with a taser.

Two officers attended a Park Crescent address at Sunshine Beach about 12.45am on Friday to conduct a welfare check when police alleged a standoff with the 44-year-old man began.

"As police entered the unit, a man presented what appeared to be a semi-automatic rifle and pointed it at the two officers," a police statement said.

The pair then retreated from the unit and began negotiating with the man while calling for back-up.

After the man allegedly put the barrel through an opening in the door a short time later, the 43-year-old male senior constable pushed him back through.

The replica firearm was dropped and officers used a taser on the man, though when trying to restrain him he allegedly slashed the senior constable on the hand with a knife.

His partner, a female senior constable, was able to disarm the man before he was taken into custody and on to Sunshine Coast University Hospital for further assessment.

The male constable was also taken to hospital for the wound to his hand.

A second rifle, also determined to be a replica, was found during a further search of the unit, along with two knives.

The 44-year-old is assisting police with ongoing investigations.