The StA-52 Assault Rifle unlocks at level 16 and appears as the Kalashnikov Concern AK-12 (AK17 Rifle).
This rifle is a basic assault rifle with the same damage and penetration as the standard AR-23 Liberator but an increased capacity and rate of fire, and slightly higher recoil. It is still very accurate and controllable despite having higher recoil and a faster rate of fire than the basic AR-23, and can easily dispatch groups of softer opponents when fired using short, controlled bursts. Despite having higher magazine capacity, the StA-52 having only six spare magazines means it has very slightly less total ammunition.
Currently re-uses an edited Goliath 12G Shotgun reload animation for both of its reloads. If someone is willing to make animations for this weapon, contact me on Discord at hyhylie.
KNOWN ISSUES (Unrelated to the reload):
The left hand's index finger slightly clips inside the handguard. Doesn't affect gameplay.
The charging handle will remain locked back until any reload is performed.