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The .300 Blackout cartridge was practically made to be suppressed, and the Sig Sauer Hexium 300 was built to return the favor. Sig used additive manufacturing to print the core from titanium, which lets them shape internal geometry that traditional welded baffle stacks just can't match. The payoff is a can that runs noticeably lower back pressure, so you get less gas blowing back through the action and into your face on semi-auto hosts. Pair it with subsonic loads and a short-barreled Blackout rifle and you have one of the more pleasant shooting setups you can put together.
The printed titanium core keeps the whole package at right around 15 ounces despite its full-size 8.9 inch length, so it won't turn your rifle into a nose-heavy chore. Because the core is grown as one piece, there are no weld points to fail under hard use. Outside, the signature hexagonal relief pattern isn't just for looks. It adds grip when you're threading the can on or off and helps shed heat, all protected under a high-temp black Cerakote finish. While it's optimized for .300 Blackout, it also handles other .30 caliber and smaller cartridges on bolt guns, up to and including .300 Win Mag, which makes it a solid crossover option for hunting rifles.
Sig ships the Hexium 300 with a steel 5/8-24 taper direct thread mount, and the rear of the can uses the industry-standard HUB interface. That means you're not locked into one company's mounting ecosystem; swap in nearly any HUB pattern mount you like and move the suppressor between hosts without hassle. Up front, a tool-less modular end cap gives you an accessory mounting point and makes cap changes simple, no disassembly required. Add in Sig's Infinite Guarantee backing the whole thing, and the Hexium 300 makes a strong case as the do-it-all can for your Blackout build.
Yes. While the internal geometry is tuned for .300 Blackout, the Hexium 300 handles .30 caliber and smaller cartridges, including 6.5 Creedmoor and bolt-action rifles up to .300 Win Mag. That makes it a versatile pick if you want one can to cover a Blackout host and a hunting rifle.
It is. The rear of the suppressor uses the industry-standard 1.375×24 HUB interface, and Sig includes a 5/8-24 taper direct thread steel mount in the box. If you prefer a quick-detach setup or need a different thread pitch, nearly any HUB pattern mount on the market will thread right in.
This is where the can really shines. Sig's 3D-printed core uses low back pressure internal geometry that vents gas more efficiently than traditional baffle stacks, so you get far less gas in your face and cleaner cycling on AR-pattern rifles. It's a noticeable difference on short-barreled .300 Blackout guns especially.
The Hexium 300 features a modular, tool-less end cap that doubles as an accessory mounting point. You can swap caps without taking the suppressor apart, and the interface leaves the door open for future accessory attachments from Sig.
| UPC | 798681731701 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | HEXIUM300 |
| ATF Type | Silencer |
| Caliber/Gauge | .300 AAC Blackout |
| Color | Black |
| Length | 8.9000 |
| Model | |
| Product Type | Suppressor |
| Shipping Weight | 1.0 |
| Thread Pattern | 5/8"x24 |
| Style | Direct Thread |
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