HSM Subsonic .300 AAC Blackout 220 Grain Centerfire Rifle Ammo

HSM Subsonic .300 AAC Blackout 220 Grain Centerfire Rifle Ammo shoots Sierra 220 Grain HPBT Match King at subsonic velocities for firearms equipped with suppressors. HSM utilizes the highest quality components to offer extremely consistent, accurate, and reliable ammunition to shooters, hunters, and law enforcement. .300 AAC Blackout 220 Grain