Animations Preview (animations by Masavik, stance values were adjusted and extra foley was added after the video's publishing):
The BO6 Grendel R31 unlocks at level 25 and appears as the SR-2 Veresk (Heather Submachine Gun).
As a .22 caliber miniature carbine, this little thing boasts good accuracy, stability and concealment, but really petty damage, which makes it a peashooter in its base configuration. Includes a variety of weapon modifications to further improve weapon stats and damage.
Thank you Hylie and Masavik, very cool!