The initial squad does retain plenty of strength and experience with 15 players included who formed part of the successful RBS 6 Nations squad earlier this year.
Wales face Japan in Osaka on June 8 in the first Test before travelling to Tokyo for the second fixture a week later and McBryde is excited by those he will take with him.
"We have selected a squad with the right blend of experience and youth and this is a great opportunity for players to make their mark on the international stage," said McBryde, who will cut the squad to 27 before departing.
"It's a chance for some players to experience the international environment for the first time but it's also an opportunity for players who have been involved previously to take the next step as we look to develop leaders.
"We are travelling to Japan as RBS 6 Nations Champions and are focused on the two Tests that await us there and we will be looking to finish the season on a high."
Wales Training Squad:
Forwards: Ryan Bevington (Ospreys), Rhys Gill (Saracens), Sam Hobbs (Blues), Ken Owens (Scarlets), Emyr Phillips (Scarlets), Scott Baldwin (Ospreys), Scott Andrews (Blues), Craig Mitchell (Exeter Chiefs), Rhodri Jones (Scarlets), Bradley Davies (Blues), Lou Reed (Blues), Andrew Coombs (Dragons), James King (Ospreys), Aaron Shingler (Scarlets), Dan Baker (Ospreys), Rob McCusker (Scarlets), Andries Pretorius (Blues), Josh Navidi (Blues).
Backs: Lloyd Williams (Blues), Tavis Knoyle (Scarlets), Aled Davis (Scarlets), Rhys Priestland (Scarlets), Dan Biggar (Ospreys), Scott Williams (Scarlets), Ashley Beck (Ospreys), Owen Williams (Blues), Jonathan Spratt (Ospreys), Dafydd Howells (Ospreys), Liam Williams (Scarlets), Harry Robinson (Blues), Tom Prydie (Dragons), Steven Shingler (London Irish).