GrovTec AR-10 Crush Washer 5 Pack – 5/8 Inch

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Magpul Armorer's Wrench w/ Bottle Opener (MAG535)

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Grovtec 5/8 Inch Crush Washers

This five pack of Grovtec’s 5/8 inch crush washers work great for your .30 caliber muzzle devices. These washers secure your muzzle device on barrels threaded 5/8×24, which is what you need for your .308 or 6.5 Creedmoor AR-10, or .300 Blackout and 6.5 Grendel AR-15s. If you’re looking for crush washers for standard 5.56 AR-15s or 9mm PCCs, check out Grovtec’s 1/2 inch crush washers


  • Material: Steel
  • Finish: Black Nitride
  • Fit: 5/8 inch Muzzle Threads (.308, .300 BLK, 6.5 CM, 6.5 Grendel, etc.)

Have Questions About this Product?

The AT3 Tactical store has a 90 day no-hassle return policy for products in good condition. You can view the full details of our return policy here.

If you encounter an issue or defect with a product after 90 days of your purchase, you can refer to the manufacturer for a warranty claim. Their policies are below.

GrovTec products are warrantied to be free of manufacturer’s defect for LIFE.

If your item(s) is defective please contact Grovtec via email or phone for return instructions: