Can Anyone ID this Mortar Bipod and Baseplate

[rob love]

The MR1520 is actually on the cradle of the tripod. At this time I have not found a number on the baseplate. I'll sandblast it in the spring and see what comes up. In the last few weeks, I have seen photos of another 4.2 here in Canada with this same baseplate and managed to purchase a deactivated barrel for mine. Not knowing when to stop, I also purchased another 4.2 with a short barrel and tripod but no baseplate, and the sight collar is missing.

[David Dunlop]

Rob! The OD Train HAS no brakes!

David

[Wayne Mayo]

Not sure if it's the same base plate. 4.2 " mortar.

[rob love]

It sure looks like it, with the exception that the springs are covered by cylinders. Thanks for the photos...nice to see what the hooks on the tube look like.