Back when these soldiers were using these pistols regularly, they would all gather around a table and strip their guns and put the parts in hot water bins on the table. Then, they'd reach in and grab a part and put their pistols back together after cleaning the barrel well. So, the pistols rarely match if they have seen any action.

I think you have one of these kinds of mixmasters. (I'm only 56- I don't speak from direct experience!)

But, it's great and should shoot real well. Blast away!