As I previously mentioned, time is of the essence and likley a system either based on the M119 or a 120mm mortar is likley the only doable solution within the budget, industrial capacity and timeframe that currently exist. It may not be the perfect solution, but it will be good enough. Pitching a system that could be partial or fully built here increases the likelihood of surviving the coming defense budget cuts, otherwise the Canadian Reserve artillery will become a professional reenactment force sleepwalking through the drills on non-functioning guns.