A 30 caliber flash can is a muzzle device designed for rifles chambered in .30 caliber cartridges, such as .308, 300 Blackout, or 7.62×39. Its primary function is to direct muzzle flash and gases forward, away from the shooter, reducing side blast and improving comfort—especially on short-barreled builds. The 30 caliber flash can works with threaded .30 caliber barrels (commonly 5/8″ x 24 thread), compatible upper receivers, handguards, and other standard muzzle accessories, making it ideal for AR-10s, AR-15s in 300 Blackout, and similar platforms.
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