The 300 Blackout (300 BLK) was designed by Remington/AAC to create a reliable, compact .30 caliber round for the AR platform that uses a standard bolt and magazine. 300 Blackout is optimized for suppressed fire with heavy bullet subsonic loads but can also be used with supersonic ammunition when extra range is needed. The 1-8” twist will work well for subsonic and supersonic loadings alike and there is typically no need for an adjustable gas block when switching back and forth between the two loadings.
Rockwell Arms stocks some of its firearms in its Sandpoint, Idaho store, but some firearms shown on the site will not be in stock in the store. If you would like to buy a particular firearm from the store, please call ahead to confirm it is in stock in the store.