Remington O/U rifle/shotgun combo. 22 mag on the top barel, .410 shotgun on the bottom barrel.
The original IZH94 from EAA/Baikal was 1/12. http://www.predatormastersforums.com/baikal.html One could surmise that the SPR94 is the same.
Remington does make a combo shotgun rifle, the Model SPR94.