Lancaster ,
Thank you for the interesting post.
The .405 carbine would be a very compact, handy, and powerful brush and truck gun.
I had to smile when I first saw the slope of the magazine as it is so much like that of my Winchester 1895 .405.

I own a Manufrance-made 12 gauge pump distributed by Marlin many years ago. A well made gun that has broken many clay targets and taken its share of fowl including wild turkey.

Is Manufrance still making guns?