Recently acquired a stamped receiver M78 that has been drilled and tapped for some sort of mount. Does anyone recognize what mount or rails would be compatible?
Based on what I can tell, the relative placement of the holes makes them incompatible with the factory 78/83S rail, AK2.0 rails and standard AK/PSL side mounts.

Based on what I can tell, the relative placement of the holes makes them incompatible with the factory 78/83S rail, AK2.0 rails and standard AK/PSL side mounts.



















































