Irish coach Eddie O'Sullivan has added five players to his squad for the autumn internationals against South Africa, USA and Argentina.
Ulsters Roger Wilson and Leinster duo Eric Miller and Victor Costello are the forwards included.
Gavan Duffy and John Kelly are added to the backs.
Meanwhile centre Gordon D'Arcy is due to undergo a scan on his groin injury on Monday.
Ireland squad: Forwards: Best (Ulster), Byrne (Leinster), Corrigan (Leinster), Costello (Leinster), Cullen (Leinster), Simon Easterby (Llanelli), Foley (Munster), Hayes (Munster), Horan (Munster), Leamy (Munster), Miller (Leinster), O'Callaghan (Munster), O'Connell (Munster), O'Connor (Wasps), O'Kelly (Leinster), Sheahan (Munster), Wilson (Ulster).
Backs: Bowe (Ulster), D'Arcy (Leinster), Dempsey (Leinster), Duffy (Harlequins), Guy Easterby (Leinster), Hickie (Leinster), Anthony Horgan (Munster), Shane Horgan (Leinster), Humphreys (Ulster), Kelly (Munster), Maggs (Ulster), Murphy (Leicester), O'Driscoll (Leinster), O'Gara (Munster), Stringer (Munster).