Ozpa,

Baikal makes MP-153 gas operated semi-auto, but todays hit #1 here is Stoger-2000 recoil operated Benelli' patent gun, camo model is on pic below.
Call making is my hobby and I make long reed goose calls and Arkanzas style duck calls.
For more details send me PM.
Bean Goose sounds like Whitefronted Greater, but high pitch is a bit lower, than Whitefronted has.
We got no Canada geese over here.

Geno.