Model AG42B Semi-Automatic Rifle
The 1942-design Swedish Ljungman has been called "the forerunner of the M16" since it used the gas impingement system for its semi-auto action, as did the later M16. With gas impingement, the energy is transmitted as pressurized gas from a port near the muzzle through a small tube along the top of the barrel back to the receiver, where it exits through a tightly fitting connector to the top of the bolt cover. There the pressure not only pushes the bolt cover to the rear, compressing a return spring, but it also causes the bolt cover to pull the bolt rearward, which in turn extracts and ejects the empty case, and recocks the hammer. Meantime, the magazine has pushed up a fresh round ready to be pushed by the now-rebounding bolt and bolt-cover, loaded and locked into the firing chamber. Squeeze the trigger and the whole cycle repeats, through the 10-round magazine.
Shown above is my 1945 Ljungman, with a standard Swedish army bayonet, and the Officer's Bayonet frog. Also shown with the optional 30-round magazine installed, in place of the standard 10-round magazine which sits alongside it. Both magazines also fit the Hakim. Note that, although the magazines are removable, they are designed to be left in place an recharged (loaded) using standard 5-round stripper clips, the guide for which is machined into the sliding bolt cover.
is definitely fun to shoot, with a lot of action going on from the
sliding bolt cover and bolt assembly. Similar to the Hakim, this
semi-auto really throws the empty brass for quite a distance forward,
up, and right. And here's how this rifle shoots at 100 yards, using
military surplus ammo, from a shooting bench, with the forestock
resting on a sandbag.