300 Blackout - 175 Grain Hollow Point Subsonic - 50 Rounds

These cartridges are 300 Blackout brass cased ammunition loaded with 175 gr. Hollow Point Subsonic bullets. This ammunition is loaded using once-fired brass converted from NATO and commercial 5.56mm casings.  For additional details on the cartridge and loading process please see below.

Warning: This product is optimized for use in pistol length gas systems. The reduced pressure associated  with subsonic ammunition can affect the proper cycling of gas operated firearms. Subsonic ammunition is best used with a suppressor and properly tuned pistol gas system. Suppressors create more back pressure and help achieve full cycling of the gas operated system. We cannot guarantee the proper cycling if not using a suppressor and pistol gas system. 

Brass: Converted and resized once-fired

Bullet: Hornady 175 gr. HPBT Subsonic

Primer: CCI 400 Small Rifle Primers

Powder: Accurate 1680

Manufacturer: GBT7 Manufacturers, LLC