The PP-19-01 Vityaz appears as the “Vaznev-9K”. It is fitted with a railed AK-100 series polymer style forend. Prior to the Season 1 update, the Vityaz could not accept any underbarrel accessories in multiplayer. Vityazs with underbarrel grips can be found in the Campaign in the hands of Al-Qatala and Russian PMCs.
In addition to the standard 30-round stick mag the gun feeds from by default, the Vityaz can accept fictional quad-stack 45 round magazines. It can also be modified with a Saiga 9’s 367mm barrel via the “SA Response III” barrel attachment.