I just finished the restoring of this 1942 Mossberg U.S. Property Trainer
The rifle was made here in the states , But went to England to train the new troops in bootcamp
It's marked " U.S. Property "
The plate on the buttstock plate has a trapdoor to store another mag'
Another cool item / It has a threaded barrel for a silenicer and still has the thread protecter
Also Marked 'N' for Navy on the stock