This is a well deserved tribute to all the ladies that endured the supreme sacrifice ensuring evil wouldn't triumph in Europe.
Here's a 1943 photograph of a full female Sniper Company enroute to the Kalinin front:
I do not know if the name "Maria" intents to display a generic character, or if it tries to match an actual sniper, but if this is the last case, the face has some similarities with Maria Morozova that had almost sixty kills under her gun or Maria Koshkina, with 85 shots.
Here's Koshkina, the telescopic sight is different from the kit, it's the m/91-30 3.5 PU with it's characteristic massive lateral mount:
However, I am pretty sure many will use this bust as a starting point to model the beautiful Roza Shanina:
And even some may attempt to model eagle eyed Lyudmila Mykhailivna Pavlichenko, that placed in her rifle 309 kills:
even if all these numbers (and as a matter of fact from all nations) are hard to credit completely, Pavlichenko is still today one of the top legends in sniper history. Decorated Heroine of the Soviet Union, she would survive the great patriotic war. For this conversion, there's something to note: She was a rare kind of a sniper amongst her pairs as her favorite rifle was the Tokarev SVT-40. This weapon has no similarity with the Mosin Nagant family.
This bust represents not only the introduction of the female soldier in to war, but these times were so hard and desperation was so immense, even young teenagers were mobilized to war effort. Here's young Klavdiya Kalugina still with the innocence of the teen years in her face: