The young Gers are one step away from the showpiece final at the national stadium, in a competition that they have won twice in its last three editions.
Mason Munn comes into the side between the posts for this one, where he will offer the last line of defence behind a backline of Zander Hutton, captain Leyton Grant, Jack Wyllie and Cameron Scott.
The midfield will be anchored by January’s Academy Player of the Month, Blaine McClure, with Calum Adamson and Paul Nsio operating in a more advanced role in the heart of the pitch.
Chris Eadie will lead the line for Smith’s side, where he is flanked by Archie Stevens and Findlay Curtis.
Among the substitutes for the Light Blues this afternoon are Alfie Halliwell, Arran Kerr, Connor Campbell, Kerr Robertson, Callum Burnside, Kieron Willox and Josh Gentles.
Kick-off in Milngavie is 4pm and you can stay up to date with the action on Twitter @RFC_Youth, where we will provide comprehensive pre-match, in-game and post-match coverage.
RANGERS: Munn, Hutton, Grant, Wyllie, Scott, McClure, Adamson, Nsio, Stevens, Curtis, Eadie
SUBS: Halliwell, Kerr, Campbell, Robertson, Burnside, Willox, Gentles