ACTION CLOSED Note that magazine design is a modification of the Belgian. This arm is designed for loading through the top with single cartridges or with a clip. The barrel is not provided with a jacket.
MODEL 90 TURKISH. RIGHT SIDE PHANTOM VIEW SHOWING MAGAZINE LOADED, BOLT THRUST FORWARD FAR ENOUGH TO REMOVE CLIP ENTIRELY AND TO START CARTRIDGE TOWARDS FIRING CHAMBER
This demonstrates clearly the operating principle of loading in all rimless type cartridges when worked through a Mauser type magazine. The forward thrust of the bolt has brought the lower edge of the bolt face against the top of the cartridge case and is starting it towards the firing chamber. Note the position of the locking lug directly behind the head of the cartridge case on the side of the bolt cylinder.
As the cartridge is thrust into the chamber and the bolt handle turned down, the rotation of the bolt brings the upper and lower lugs, which have been traveling on the right and left side as they went forward in the receiver well, into locking recesses above and below the head of the cartridge case in the firing chamber.
In magazines using rimless cartridges, the magazine dimensions are smaller and the box can be straighter because of the manner in which the cartridges lie on top of each other.
3. The barrel is turned down in steps with the portion between the steps tapering slightly. The sights are attached to the barrel.
The rear sight is shaped with a thin tube below encircling the barrel and is screwed and soldered to the barrel. The face of the leaf is graduated from 400 to 2000 meters in hundred meter steps. At right angles to the leaf at the rear end is a small projection with a notch for 250 meter fire.
4. There is a second opening in the tang just behind the magazine for a point on the front end of the sear which can rise as the trigger is pressed, to engage in a slot in the bolt.
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