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The HUB standard changed the suppressor game for the better, and GrovTec's Direct Thread Adaptor is one of the simplest ways to take advantage of it. This little piece of stainless steel screws into any can with the industry-standard 1.375×24 HUB thread pattern and converts it to a straightforward 5/8×24 direct thread mount, the most common thread pitch you'll find on .308 and 7.62 NATO barrels. No proprietary muzzle devices to buy, no timing shims to fuss with. Thread it into your suppressor, spin the can onto your barrel, and get back to the range.
GrovTec machined this adapter from a single piece of stainless steel, so there are no joints or press-fit parts to work loose under heat and vibration. The black nitride finish is a smart touch too. Nitride treats the surface of the steel itself rather than coating over it, which means better wear resistance and corrosion protection that won't flake off after a few hundred rounds. The whole thing seats flush and low profile inside the mount, keeping your suppressor as short and trim as the design allows instead of adding unnecessary length out front.
Direct thread mounting has a loyal following for good reason. It's lighter than most quick-detach systems, tends to be more concentric to the bore, and there's simply less hardware between your barrel and your baffles. For bolt guns, precision rifles, and hunting setups where the can mostly stays put, it's tough to beat. If you're running a HUB-compatible suppressor and your rifle wears 5/8×24 muzzle threads, this GrovTec adapter is the missing link. GrovTec also makes a 1/2×28 version if you want to share one can across your .22 and 5.56 barrels, so it's easy to build out a whole family of hosts around a single suppressor.
If your suppressor uses the industry-standard 1.375×24 HUB thread pattern at the rear, this adapter will thread right in. HUB has become the common standard across a huge range of suppressor brands, but it's worth double-checking your can's specs before ordering. Note that the suppressor itself is not included.
The 5/8×24 thread pitch is the standard for most .308 and 7.62 NATO barrels, and you'll also find it on plenty of 6.5 Creedmoor and other 30 caliber rifles. As long as your muzzle threads are 5/8×24 and your suppressor is rated for the cartridge you're shooting, this adapter will do the job. GrovTec makes a separate 1/2×28 version for 5.56 and rimfire hosts.
It depends on how you shoot. Direct thread is lighter, simpler, and typically more concentric to the bore, which makes it a favorite for bolt guns and precision rifles where the can stays on most of the time. QD systems are handier if you swap your suppressor between rifles constantly. This adapter gives you the direct thread option without giving up your HUB compatibility.
Yes. Nitride is a surface treatment that hardens the stainless steel itself rather than sitting on top like paint or a coating, so it resists heat, wear, and corrosion very well. It's the same type of finish used on quality barrels and bolt carriers for exactly that reason.
| UPC | 811071013840 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | GTHM371 |
| Caliber/Gauge | .308 / 7.62 NATO |
| Color | Black |
| Product Type | Adaptor |
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