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The "Unrated" version of M3GAN differs from the theatrical PG-13 release by including more explicit violence and gore that was originally trimmed to meet rating standards. The specific file name you provided points to
: Gemma, a brilliant roboticist, develops a lifelike AI doll named M3GAN to be the ultimate companion for her orphaned niece, Cady. The doll’s programming to "protect" Cady from physical and emotional harm eventually leads to a series of violent and murderous events. Key "Unrated" Differences : The doll’s programming to "protect" Cady from physical
: Features more graphic shots, including a character's ear being pulled off and more visceral blood splatter during kills. Parents guide - M3GAN (2022) - IMDb
Unrated version restores various scenes which were trimmed/replaced for violence and language to secure a PG-13 rating. Parents guide - M3GAN (2022) - IMDb