5/8x24 Muzzle Devices
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5/8x24 is the common muzzle thread for .30-caliber AR barrels: 300 Blackout, 7.62x39 and .308 AR-10s, and also for 6.5 Grendel, 6mm ARC and 6.5 Creedmoor. These flash hiders, compensators, muzzle brakes and suppressor mounts all thread 5/8x24. A .30-caliber device on a smaller bore is safe but less effective; a device made for .22 caliber is never safe on a .30-caliber barrel.
Compare 5/8x24 muzzle devices from every store we track, and see our thread size chart if you're not sure what your barrel uses.





























