AtP.9-22

Ingame model from Altirus: The Second Leersog War mod for Ravenfield

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The AtP.9-22 (Atamaczniy Pijstalka, 9mm, 522; or Auto-machine Pistol, 9mm caliber, production year 522) is a Syrvanian submachine gun chambered for the 9x18mm Tsolianets cartridge, and used extensively by Syrvanian forces throughout the Westenlands Wars, as well as other national and irregular forces during and after the Westenlands Wars.

## Design and development

A design for a standard, domestically-produced 9mm submachine gun was submitted by designer Grzegor Kawodiy, and approved for development by the Syrvanian Defense Production Bureau in 520 as the ZaW.Ka 9-20 (Zaswiadcniy Warez, Kawodiy, 9mm, 520; or Experimental Weapon, Grzegor Kawodiy, 9mm caliber, acceptance year 520). While plans had been devised to focus on metal stamping for the production of domestic arms, the ZaW.Ka 9-20 was intended as a stop-gap or fallback design which could be produced with milling, though it would switch to stamped components as sheet metal stamping became available during its development.

During trials, the weapon's rate of fire was found to deplete ammo quickly and made the weapon difficult to control. In response, the Defense Ministry proposed two production variants. The Kompa ("Compact"), to be produced as the AtP.9-22/K (though the K modifier would be dropped), would be built with a heavier bolt (slowing the rate of fire) and would be issued with 34-round stick magazines, intended for use by squad leaders, rear-line personnel, and vehicle crews. Meanwhile, the Zdurma ("Assault"), to be produced as the AtP.9-22/Z, would be built with the original, lighter bolt, but with a modified magazine well to accommodate a 70-round drum, for use by shock troops. The Zdurma variant was originally planned to include a bipod for accurate supporting fire, but trials showed it to be too unwieldy and heavy in conjunction with the 70-round drum.

An integrally-suppressed variant, the Sztomik ("Silent") AtP.9-22/S, would enter production in 526 for use by commandos and paratroopers, seeing limited use owing to the expense of the silencer design and its tendency to quickly overheat. It would be replaced by a new design by Kawodiy, the AtPS.6-31, chambered for a proprietary 5.6x14mm cartridge, in 531.

## Service history

During the invasion of Syrvania by Chergaria, the Kompa and Zdurma variants were issued according to the Defense Ministry's original scheme, though the latter would also be issued out to rifle squads for urban warfare, such as the multiple battles for Pansk. However, weight and bulk issues experienced with the Zdurma variant made it impractical and unpopular with its users, with many line infantry units requesting stick magazines instead.

While the Kompa variant had effectively become the standard-issue version of the AtP.9-22, surplus Zdurma variants remained in inventory with a number of line units during the invasion of Hetland, chiefly among shock troops of the Independent Rapid Divisions, though would see relatively rare usage, generally for clearing trenches and fortifications. Zdurmas would gradually be phased out over the course of the Westenlands wars, and though the AtP.9-22 was slated to be replaced by the AtP.9-35 in 535, the 9-22 would never be fully replaced.

### Post-Westenlands Wars usage

The ubiquity of the AtP.9-22 would see it commonly used with irregular troops, both supported by or opposing Syrvania, and would consequently be spread across Altirus and the world. While it had completely left national service worldwide by 575, it continues to see limited use among militia or reserve units, and both original production models and modern copies frequently appear in use by irregular forces.