The attack happened in the Barra Street area of Antrim.
Three men, two aged 20 and one aged 22, have been detained on suspicion of grievous bodily harm with intent, robbery and being concerned in the supply of a class B controlled drug.
All three men are currently in police custody.
This assault occurred at approximately 10.25am yesterday, Saturday, 6 October
Police later carried out searches in the Springfarm area of Antrim when a number of items were seized, including a stun gun and suspected drugs.
Police would appeal to anyone who witnessed this assault or has any information that would assist police enquiries to contact detectives at Antrim on the non-emergency number 101, quoting reference 444 06/10/18.
Alternatively, information can also be provided to the independent charity Crimestoppers on 0800 555 111, which is 100% anonymous and gives people the power to speak up and stop crime.