The Glasgow Hawks' and Stage 3 Academy lock impressed in a number of appearances for Warriors during the opening weeks of the PRO12 season.
Following the camp in early January, which will include a hit-out against an Edinburgh Rugby side, the squad will regroup a fortnight later to prepare for their first game of the Six Nations against England on Friday 5 February, at Broadwood Stadium (kick-off 8.00pm).
They will then face Wales and Italy away, before returning to Broadwood to host France, prior to concluding their campaign on the road to Ireland.
The team finished third in last year's Six Nations competition and maintained a 100% record at home, defeating Wales (36-34), Italy (45-0) and Ireland (17-10), before achieving a highest-ever finish of seventh in the World Rugby U20 Championship in June.
Scotland U20 squad for Six Nations training camp on Tuesday 12-14 January at BT Murrayfield:
Forwards
Stephen Ainslie (Currie)
Lewis Anderson (Ayr)
Hamilton Burr (Aberdeen Grammar Rugby)
Sebastian Cecil (Nottingham University)
Ben Christie (Loughborough)
Luke Crosbie (Currie) *
Scott Cummings (Glasgow Hawks) **
Andrew Davidson (Glasgow Hawks) **
Matt Emmison (Aberdeenshire)
Bruce Flockhart (Glasgow Hawks) **
Callum Hunter-Hill (Stirling County) **
Murray McCallum (Heriot’s) **
Ally Miller (Melrose) **
Adam Nicol (Stirling County)
Gary Robertson (Gala) **
Callum Sheldon (University of Leeds)
Matt Smith (Glasgow Hawks) **
Backs
Reiss Cullen (Watsonians)
Hugh Fraser (Heriot’s) **
Tom Galbraith (Melrose) **
Darcy Graham (Hawick) *
Adam Hastings (Bath Rugby)
Rory Hutchinson (Northampton Saints)
Chris Lines (Boroughmuir)
Ross McCann (Stewart’s Melville) *
Matt McPhillips (Currie)
Robbie Nairn (Harlequins)
Ben Robbins (Currie) **
Charlie Shiel (Currie) *
George Taylor (Melrose) **
Unavailable for selection due to injury
Scott Burnside (Boroughmuir)*, Jake Kerr (Boroughmuir)**, Dan Elkington (Melrose), Alex Craig (Gloucester), Tom Gordon (Currie)*, Lewis Wynne (Stirling County)**, Ruairi Howarth (Gala)**
Unavailable for selection due to pro-team commitments
Zander Fagerson (Glasgow Warriors), Jamie Ritchie (Edinburgh Rugby), Blair Kinghorn (Edinburgh Rugby)
*BT Sport Scottish Rugby Academy Stage 2 player 2015/16
** BT Sport Scottish Rugby Academy Stage 3 player 2015/16