Description
B&T has been building suppressors since 1991, and the Stille 300 shows what happens when that kind of experience meets modern manufacturing. The body is 3D-printed titanium, which keeps the whole can at a very manageable 13.7 ounces across its 8.5 inch length. Where a lot of lightweight titanium cans give up durability to save weight, B&T dropped an Inconel 718 blast insert and blast baffle into the high-stress zone right off the muzzle. That superalloy shrugs off the erosion and heat that chew up lesser baffles, so the service life holds up even if you run it hard. It carries a full-auto rating too, which tells you plenty about the margin built into this thing.
Built Around Bolt Guns, Happy on Gas Guns
The Stille 300 was designed from the start for bolt-action rifles, where balance, consistency, and serious sound reduction matter most. It is tuned to perform with both supersonic and subsonic loads, which makes it a natural fit for a suppressed .300 Blackout bolt gun, and the multi-caliber rating gives you room to move it between rifles in the safe. Hunters will appreciate how little it changes the handling of a mountain rifle, and precision guys will like the shot-to-shot consistency. It runs just fine on gas-operated rifles as well, so one tax stamp can cover a lot of ground.
Stille 300 Mounting and Compatibility
The rear of the can uses the industry-standard 1.375×24 HUB interface, so you can run just about any HUB mount on the market, including B&T's own RAID quick-attach system. Out of the box it ships with a 5/8×24 direct thread adapter, which covers most .30 caliber and .300 BLK barrels without buying anything extra. Machined wrench flats make installation and removal quick without hunting for specialty tools. The Type 2 anodized black finish keeps it low-key and durable in the field.
Key Specifications
- Manufacturer: B&T
- Model: Stille 300
- Manufacturer Part Number: SD-145894
- UPC: 840225722666
- Product Type: Rifle Suppressor
- Caliber Rating: Multi-caliber, .223 Rem and up (optimized for .300 BLK)
- Weight: 13.7 oz
- Overall Length: 8.5 in
- Diameter: 1.7 in
- Materials: 3D-printed titanium body with Inconel 718 blast insert and baffle
- Finish: Type 2 Anodized
- Color: Black
- Attachment Interface: 1.375×24 HUB compatible
- Mount Included: 5/8×24 direct thread adapter
- Full-Auto Rated: Yes
What’s Included
- B&T Stille 300 suppressor
- 5/8×24 direct thread HUB mount
Frequently Asked Questions
What rifles and calibers work with the B&T Stille 300?
The Stille 300 is multi-caliber rated, starting at .223 and covering common .30 caliber rifle cartridges, with the design optimized around .300 Blackout. B&T built it primarily for bolt-action rifles, but it runs great on gas-operated platforms too and even carries a full-auto rating. That flexibility makes it easy to share one can across several rifles.
Does the Stille 300 come with a mount?
Yes, it ships with a 5/8×24 direct thread adapter, which fits the majority of .30 caliber and .300 BLK threaded barrels. The rear of the suppressor uses the industry-standard 1.375×24 HUB interface, so you can swap in quick-detach mounts like B&T's RAID system or other HUB-pattern mounts whenever you want.
How quiet is the Stille 300 with subsonic ammo?
B&T tuned this can to perform with both supersonic and subsonic loads, and it really shines on a .300 Blackout bolt gun running subsonics, which is exactly the setup it was designed around. Signature reduction and shot-to-shot consistency were the design priorities, so it delivers where hunters and precision-minded folks care most.
Will the titanium construction hold up to heavy use?
It will. While the body is lightweight 3D-printed titanium, B&T reinforced the highest-stress area with an Inconel 718 blast insert and blast baffle. Inconel resists the heat and erosion that wear out standard baffles, which significantly extends service life, and the full-auto rating backs up how much abuse the design can take.





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