A young Hokitika man apparently unhappy with standards at McDonald's in Greymouth jumped on to the counter and fired two Nerf guns during a bizarre incident on Saturday.

Greymouth prevention sergeant Paul Watson said the 22-year-old fired foam rubber bullets from a children's toy gun while yelling comments about the standard of the food on offer, at about 3.30pm.

He then scarpered but was found by police a short while later and charged with disorderly behaviour.