A bolt carrier group for a firearm includes a bolt carrier, a bolt, and a cam pin. The bolt carrier includes a medial portion and a first and second outer portion. The bolt carrier slidably couples with a first elongated member at the first outer portion and a second elongated member at the second outer portion. The bolt is received within an inner volume of the bolt carrier. The cam pin is coupled with the bolt. The cam pin is positioned at least partially within the inner volume of the bolt carrier and extends through a top surface of the bolt carrier. The cam pin and the bolt are translatable and pivotable relative to the bolt carrier between a first position and a second position. The cam pin is configured to engage a recess of the second outer portion of the bolt carrier when in the first position.