Changes

As a modular unit, Groza can cope with different many cartridge types such as the Soviet 7.62x39mm M43, 5.45x39mm M74, 5.56x45mm NATO and 9x39mm SP-5/SP-6. The modular design allows Groza to be quickly refitted and chamber different calibre munitions for any given mission types, or a hot swap of configuration on the field, filling roles from a short range carbine to a longer range DMR. During the development stage an idea to fit Groza to chamber the 12.7×108mm anti-material rounds was proposed, converting Groza into an anti-material sniper, but the idea was dismissed likely due to the weapon frame being unable to cope with the large recoil.

Groza works on the same internal operational principle as AKS-74U, but the gas-operated, rotating bolt mechanism is set in bullpup configuration instead, the compact bullpup design gave Groza an increased portability and balance feel, proposing that the rifle can be fired single handily without issues. Even the some of the features such as the selective firing modes on 74U was retained. Groza-4 is fed on makes use of the 20-round magazine of AS Valoriginally developed for Tiss, able to be fired at a rate of 700 rounds per minute. While Groza-1 uses is fed the AK-47/AKM 30-round magazine and able to achieve 750 rounds per minute rate of fire.

Like most modular assault rifles, Groza can be outfitted with many combat accessories on the provided rails, scope/optics such as the PSO can be mounted directly on the carrying handle. Standard issue Groza kit comes with specially designed accessories such as suppressors, night optics, fore grips and cleaning kits, on top of all that Groza also had a specially modified GP-25/30 under-barrel grenade launcher unitwith the specially made alternative pistol grip design, which could launch the grenade from the launcher and fire the gun with a single trigger pull.