Product Overview

Lock your .308 muzzle device down properly with the GrovTec Crush Washer .308 – 5 Pack. Purpose-built for 5/8-24 threaded barrels, these steel washers give you a clean, repeatable way to time brakes, comps and flash hiders without dodgy shims or guesswork. Just run one on, torque to spec and let the controlled crush take care of the final alignment.

Each washer is machined from high-quality steel and finished in a premium black nitride coating, so they shrug off carbon, weather and hard use at the range or in the paddock. Sold in a 5‑pack, they’re ideal for multiple builds or keeping spares in the kit, and they’re a simple, reliable upgrade for any .308 rifle running a 5/8-24 threaded muzzle.

Key Features

• Designed to be installed to secure muzzle devices, ensuring a solid, reliable attachment on .308 calibre rifles.
• 5/8-24 thread pitch compatibility provides precise fitment for common .308 rifle barrels, improving alignment and performance of muzzle brakes, flash hiders, and suppressor mounts.
• High-quality steel construction delivers long-term durability and strength under repeated firing and heavy recoil.
• Premium black nitride finish enhances corrosion resistance and wear protection, ideal for harsh field conditions and regular maintenance cycles.
• Controlled crush design allows proper timing and indexing of muzzle devices without damaging barrel threads, supporting consistent accuracy.
• Five-washer pack offers ample spares for multiple builds or re-installations, reducing downtime during rifle upgrades or servicing.
• Optimised for .308 Winchester platforms, providing dependable compatibility with a wide range of rifle and muzzle device combinations.
• Compact, low-profile washer geometry maintains a clean muzzle appearance while delivering secure, repeatable torque settings.
• Black finish blends with most modern muzzle devices and barrels, giving a uniform, professional look to custom builds.
• Simple, drop-in installation makes it an easy upgrade for DIY rifle owners and armourers seeking consistent muzzle device setup.