I have one of those. They weren't issued with magazines. Some of them even had wooden blocks glued into the mag wells to block them.
The safety is missing to allow the installation of an adjustable sight.
The sight is held on at the hole drilled half way down the butt socket and by an extended rear trigger guard screw.
There are picks of the rear sight in Skennerton's books.
If you can find the rear sight, they usually sell for around $150-$200 depending on condition.
The rifle is cut down to that configuration purposely. I don't remember the reason but I think it was either for schools or cadets.
Some come with a rear top hand guard, most don't. Some have rear sights missing as well.
Your's was obviously drilled and tapped for the adjustable sight add on but it's been misplaced.
A lot of them were used as cheap 22 cal hunting rifles after they were sold on the surplus market. Most of them, as long as their bores are good will shoot better than their owners.
The rifle you have is worth at least $250. If the inside is as nice as the outside, it may be worth more.
I have seen these with magazines installed, with or without followers. I've also seen them with Williams adjustable target sights on the rear of the receiver. These options are definitely add ons, after being surplussed out.
There is a decent write up on them in Skennerton's book.
