The LBE Unlimited Crush Washer (LBE Unlimited part no. ARCW-556) is a black, standard crush washer sized for .223 Rem/5.56x45mm NATO AR-15 platforms. LBE Unlimited builds it to compress under torque, which is what lets you time a muzzle device, like a flash hider or brake, to sit straight up without over- or under-tightening it. It’s a simple, inexpensive part, but the right one matters: a missing or reused crush washer is a common reason a muzzle device ends up canted after installation.

Key Specifications

• Sized for .223 Rem/5.56x45mm NATO AR-15 platforms.
• Finished in black.
• Functions as a standard crush washer, compressing under torque to let you clock a muzzle device correctly.
• Sized for standard 1/2×28 threaded 5.56/.223 muzzle devices.
• Designed for single use; replace it each time a muzzle device is removed and reinstalled.

Frequently Asked Questions

What does a crush washer actually do? It compresses as you torque down a muzzle device, letting you rotate it to sit straight without over- or under-tightening.

Will this fit my 5.56 AR-15? Yes, it’s sized for .223 Rem/5.56x45mm NATO AR-15 platforms.

Buy the LBE Unlimited 5.56 AR-15 Crush Washer

A canted muzzle device is often just a missing or reused crush washer, and this LBE Unlimited washer is a cheap way to get a fresh one before your next install. Order from our Lubbock, Texas gun shop and it ships fast to your door, along with more AR muzzle devices.