Samozaryadny Karabin sistemy Simonova, 1945
Or SKS for short. Self-buffs RoF, but with too weak stats. Between G43 and M14 you have enough good low-rarity rifles to keep you supplied while you work on better ones.
|Niche, needs special equip
Good with unique gear and mod3. Less good before digimind evolution. Workable though.
Well EN is now having her special equipment, she can be worth it. Its a very significant boost (Puts her almost on par with NTW for raw ATK stat) and she can 1-shot stuff as an opener pre-skill. She'll be decent but not quite a priority yet.
Of note, she has almost as much ATK as NTW with her chip. This has certain uses to a creative commander.