GrovTec crush washers provide the proper indexing and sealing for .223/5.56 muzzle devices.
- Part Type: Crush Washer
- Thread Pitch: 1/2×28 (.223/5.56)
- Material: Heat-Treated Steel
- Finish: Phosphate
- Installation: Requires Armorer’s Wrench and Torque Wrench
- Includes: 5 Crush Washers
- Note: Single-Use Only – Do Not Reuse
