SIG 300BLK subsonic rounds are propellant chemistry optimized to produce the ideal amount of down-bore pressure for cycling both piston and gas driven platforms, with or without sound suppression. Engineered with the SIG MCX™ mission configurable rifle in mind – these rounds minimize recoil, sound, and muzzle flash while maximizing the number of shots on target.
SIG SAUER subsonic rounds feature a 220gr Sierra Match King Projectile for superior accuracy and minimal dispersion when suppressed.
- Caliber: 300 Blackout
- Bullet Weight: 220 gr
- Bullet Type: Sierra MatchKing
- Muzzle Velocity: 1000 fps
- Muzzle Energy: 488 ft-lbs