yeah no clue about training guns but should not be a problem.
I need to take a look into it since I need some in the future.
Well contact MD Charlton
sales@mdcharlton.ca and see what they have in stock. They might do custom order since I know ASP have the m4 with rail and sliding stock. Cost around 110-140 bucks.
Good store but I only deal with them on the western part of Canada but shouldn't be a problem.