GrovTec GTHM247 Muzzle Thread Protector 5/8x24 .750" - AR-10/.300 AAC

The GrovTec GTHM247 muzzle thread protector is a one-piece steel accessory designed to shield the muzzle threads on your rifle when no flash hider, muzzle brake, or suppressor is installed. Machined from quality steel with a durable black-oxide finish for lasting corrosion resistance, this thread protector is purpose-built for the AR-10 platform and similar large-bore AR-pattern barrel profiles.

Cut with the popular 5/8x24 thread pitch and a .750" outside diameter, the GTHM247 is sized for the .308 Win and .300 AAC Blackout barrel profiles common to AR-10-pattern rifles and AR-15 builds chambered in .300 BLK. The black-oxide coating blends cleanly with most factory barrel and muzzle-device finishes and disappears visually once installed.

Whether you run a dedicated .300 Blackout upper, a .308 AR-10, or stage a .300 BLK barrel on an AR-15 platform, the GTHM247 is a simple, low-profile way to keep muzzle threads clean, protected, and debris-free at the range and during long-term storage. Made in the USA.