Why The 6mm MAX?Cartridge designers have struggled with 2.26 OAL, and having enough room for increased case capacity. The 6mm MAX has unlocked the code on the .378 bolt face AR-15 cartridge. It is a brand new cartridge designed for the unmodified mil-spec .378 bolt face, and a full mass bolt carrier group. The 6mm MAX is pressure tested to SAAMI standards of 55k psi.
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