Suttonians scrum-half Adam Griggs partners Noel Reid at half-back, while Brendan Macken is paired at centre alongside Tom Daly, with Dave Kearney, returning from injury, named at full-back.
Up front, Rhys Ruddock forms an exciting back-row alongside two former Leinster Schools Senior Cup-winning captains, Conor Gilsenan (Clongowes Wood in 2011) and Jordi Murphy (Blackrock College in 2009).
Isaac Boss adds experience to a bench that includes the likes of Martin Moore and Thomas Sexton, who both featured for the senior team away to the Ospreys in the last round of Pro12 matches.
James Cronin will pack down alongside Sean Henry and Christy Condon in the front-row, with Ian Nagle and Dave Foley directly behind them.
Hanrahan's U-20 World Cup colleague Shane Buckley is at blindside with the experienced but youthful Tommy O'Donnell at openside and even more youthful Paddy Butler anchoring the scrum. Shannon prop Kevin Griffin is the only non-contracted player in the squad.
Leinster 'A' – D Kearney; A Boyle, T Daly, B Macken, S Coghlan-Murray; N Reid, A Griggs; J McGrath (capt), J Tracy, J Hagan, T Beirne, B Marshall, R Ruddock, C Gilsenan, J Murphy.
Reps: T Sexton, J O'Connell, M Moore, J Conan, J Coghlan, I Boss, C Marsh, A Byrne.
Munster 'A' – F Jones; J Murphy, D Barnes, I Dineen, R O'Mahony; JJ Hanrahan, P Stringer; J Cronin, S Henry, C Condon, D Foley, I Nagle, S Buckley, T O'Donnell, P Butler (capt). Reps: D Casey, J Ryan, K Griffin, B Hayes, P Donnellan, R Murphy, D Williams, S Deasy, C Bohane.