The new Dumoulin A2000 actions are made in China. They have a small gas escape hole in the right receiver wall and low dovetailed and drilled flat bridges. The A2000LM has a front bridge extended in front of the recoil lug that I believe allows for the same guard screw spacing as the standard action.The bolt handle is straight and the double square bridges appear higher. The magazine is drop box. More importantly the bolt diameter is described as .750" in diameter to handle cases as large as the .505 Gibbs.This action is different from the Pretchl, FZH, Hartmann and Weiss,Johannsen or older H.Dumoulin Imperial magnums.I do not know where it is manufactured. Attempts to get clarification on this subject from Dumoulin were unsucessful. They published a full page on the A2000 action and extol it's virtues including the fact that it is sent to the Belgian government for proof marks but fail to mention whether it is milled or CNC machined or more importantly where it is manufactured.
Dumoulin A2000 page: http://www.dumoulin-herstal.com/en/mecanisme.htm
You can copare this to The Tradex/Sarco Dumoulin action:
http://www.tradeexcanada.com/content/commercial-dumoulin-m98-mauser-action

The single picture of the A2000 LM action does not show much detail. I would not be surprised if it is also of Chinese or other Asian origin.( Remember the Korean Empire Magnum Mausers?).

Dumoulin A2000 page: http://www.dumoulin-herstal.com/en/a2000lm.htm

When a modern standard or magnum Mauser action such as the German ones mentioned above or the Saterlee, Granite Mountain or Mayfair will set you back $4000-$8000 USD I can understand why in a competitive market a considerably higher profit margin can be realized with a $100? action (based on the Sarco price of $295 retail, the importer/distributor must pay less than that to make it as profitable as other Chinese imported goods).
My problem is when you deal with an established "reputable" firm you expect honest representation of the product you are so dearly paying for.
Al