American Marksman Stryker 300AAC Blackout Subsonic Ammunition 220 Grain (250 Rounds)


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Please Note: This ammunition from American Marksman has mixed reviews. Caliber Armory has not tested this ammo and cannot vouch for its quality.

  • Lake City Brass
  • 147 Grain
  • Boxer Primers and Projectiles

Note from manufacturer: With the popularity of 300 BLK caliber SBR’s / Pistols and the many different barrel lengths associated with these configurations which may affect proper cycling, users should be aware that all testing of this ammo is done on a 10.5″ barrel with optimum results. As it is designed for use in rifles, American Marksman will not be responsible for cycling issues resulting from firing from a SBR / Pistol with barrel lengths less than 10.5″


Additional information

Weight 11.7 lbs

American Marksman


.300 AAC Blackout (7.62x35mm)



Grain Weight


Units Per Box


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