The B&T Stille 300 (brand part no. SD-145894) is a multi-caliber suppressor engineered from .223 Remington up through .338 Lapua Magnum, purpose-built for bolt-action rifles while remaining fully capable on gas-operated platforms. B&T 3D-prints the Stille 300’s body from titanium to save weight, then backs it with an Inconel 718 blast insert and blast baffle to resist erosion and high-pressure wear over the suppressor’s service life. It ships with B&T’s 5/8×24 direct-mount thread interface, and its Black finish suits precision hunters and long-range shooters who want signature reduction without sacrificing barrel harmonics. As a Title II item under the National Firearms Act, it requires an approved ATF Form 4 and transfer through a licensed NFA dealer before it can go home with you.

Key Specifications

• Rated from .223 Remington up to .338 Lapua Magnum.
• Body is 3D-printed titanium for reduced weight.
• Uses an Inconel 718 blast insert and baffle for erosion resistance.
• Ships with a B&T 5/8×24 direct-mount thread interface.
• Finished in Black.
• Optimized for bolt-action rifles, while remaining usable on gas guns.

Frequently Asked Questions

Is this an NFA item? Yes. As a suppressor, it’s a Title II firearm requiring an approved ATF Form 4 and transfer through an NFA-licensed dealer.

Can it run on a gas-operated rifle, or only bolt guns? It’s designed around bolt-action rifles first, but remains fully capable on gas-operated platforms.

What mount does it use? It ships with B&T’s 5/8×24 direct-mount thread interface.

Buy the B&T Stille 300 Suppressor

A titanium-and-Inconel suppressor rated across a wide caliber range, from .223 Remington to .338 Lapua Magnum, is exactly what the Stille 300 delivers. This is a Title II item regulated under the National Firearms Act. Purchase requires an approved ATF Form 4, no federal transfer tax, and transfer through a licensed NFA (SOT/Class 3) dealer, with an extended federal approval wait before delivery. Order through B&T‘s suppressor lineup and our Lubbock, Texas team will walk you through the transfer process.