Remington UMC 300 Blackout 220 gr Subsonic OTFB - Box of 20

Manufactured by Remington
Manufactured by Remington
5 Reviews

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The Remington Subsonic 300 Blackout ammo is the ultimate cartridge when low muzzle flash, low sound signature, and low recoil are required, without sacrificing the heavy hits! The UMC line of ammunition by Remington is designed for hunting whether you are going after hogs or varmints. It features an open tip flat base projectile that expands on impact without breaking apart to increase the surface area and in turn the wound channel. This bullet is built for maximum weight retention to ensure that your target goes down quickly and humanely. Not only is this heavy round good for hunting and self-defense, it is extremely fun to shoot out of a suppressor. The heavy weight keeps it from breaking the sound barrier, so it is extremely quiet to shoot, even out of an SBR. This affordable and versatile .300 blk ammunition is a great choice for your next range day or hunting trip.

  • Open tip flat base design
  • 220 grains for subsonic performance
  • Reloadable brass case
  • Powder load optimal for running an AR-15
  • Sealed primers for reliable ignition in any weather

For more than 200 years, Remington innovation has always been ahead of its time. Remington engineers are extremely passionate about what they do and are always looking for new ideas on and off the clock. Because of this enthusiasm, Remington is constantly bringing new products to the market like the Versaport Gas operated system and the Core-Lokt projectile.  At their state-of-the-art research and development facility, The Rock, they continue shattering convention, revolutionizing an industry, and setting the performance standard all others must follow.
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Bullet TypeOpen Tip Flat Base
Bullet Weight220 gr
Caliber Gauge300 Blackout
Muzzle Energy503 ft.-lbs.
Muzzle Velocity1015 fps

WARNING: Discharging firearms in poorly ventilated areas, cleaning firearms or handling ammunition may result in exposure to lead and other substances known to the State of California to cause birth defects, reproductive harm and other serious physical injury. Have adequate ventilation at all times. Wash hands thoroughly after exposures. For more information, see

Ratings & Reviews

5 reviews

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no issues.


cycled 2 boxes through my 8" sbr with out a single hick up. ran relatively clean. no suppressor yet will review again once i do.



great box of bullet

Rem 300 BLK 220 gr ammo


Great price on subsonic ammo for the 300 BO.

Excellent price


Have not tested yet, but could not pass on this price.

Great price on this ammo


Love this ammo.