Mystery Federal Arms magazine?

[Victor Romen]

Just wondering if anyone can ID this magazine...



Follower and feed lips make it seem like it takes a center fire rifle cartridge (308 Win).


Only markings are...
FEDERAL ARMS, INC.
ST. PAUL, MN.


Thanks for any insight you can provide.

 

[rcmodel]

My guess is Hakim or Ljungman AG-42 rifle in 8mmx57 or 6.5mmx55.

rc

 

[Victor Romen]

Nailed it. Thanks for the lead.