The GrovTec HUB Direct Thread Suppressor Adaptor, 5/8×24 (brand part no. GTHM371) mounts a suppressor directly to a threaded barrel through the HUB mount standard. GrovTec machines it from one piece of stainless steel and finishes it in black nitride, so the adaptor sits low and flush against the muzzle. This version is cut for 5/8×24 barrel threads, which is the thread to match before you order. It suits a shooter who already owns a HUB-pattern suppressor and wants a clean, solid way to run it on a threaded rifle barrel.

Key Specifications

• Barrel thread size is 5/8×24, the pitch to confirm on your muzzle before you order.
• The suppressor interface is the 1.375×24 HUB mount standard, which is what lets HUB-compatible suppressors thread onto it.
• Construction is one-piece stainless steel, with no joints between the barrel threads and the suppressor mount.
• The finish is black nitride, a hard surface treatment that resists wear at the muzzle.
• The mount is low profile and flush, keeping the suppressor close to the end of the barrel.
• The adaptor mounts suppressors directly to threaded barrels, and the suppressor itself is not included.

Frequently Asked Questions

What barrel thread does this adaptor fit? This one is cut for 5/8×24 barrel threads. GrovTec also offers the HUB Direct Thread Suppressor Adaptor in 1/2×28 as a separate part number, so match the thread to your muzzle.

Does it come with a suppressor? No. The adaptor is sold on its own, and the suppressor is not included.

What suppressors does it mount? It uses the 1.375×24 HUB mount standard, so it is made for suppressors that use the HUB mount.

Buy the GrovTec HUB Direct Thread Suppressor Adaptor, 5/8×24

The right adaptor makes a suppressor easy to move from rifle to rifle, and a flush mount keeps the setup tidy. Order the 5/8×24 GrovTec HUB adaptor from our Lubbock, Texas gun shop for fast, direct shipping, and browse more in our Class 3 parts and accessories section.