The Sig Sauer Hexium 300 Ti (Sig Sauer part no. HEXIUM300) is a .300 caliber suppressor from Sig Sauer’s Hexium line, built to bring low back pressure and quiet, clean tones to compatible firearm platforms. Sig Sauer threads the Hexium 300 Ti in a 5/8×24 pattern and sizes it at 8.9 inches. The Hexium 300 Ti favors .300 caliber shooters who want Sig’s durable, low back-pressure Hexium design.

Key Specifications

• Rated for .300 caliber ammunition.
• Threaded 5/8×24 for direct attachment.
• Measures 8.9 inches long.
• Built for low back pressure.

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.

What does the design prioritize? Low back pressure and clean, quiet tones.

How does it mount? A 5/8×24 threaded direct-mount system, not a quick-detach mount.

Buy the Sig Sauer Hexium 300 Ti Suppressor

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; ATF approval on most individual eForm 4 filings now comes back in days, and trusts take a little longer. Order through Sig Sauer‘s silencers and suppressed firearms lineup and our Lubbock, Texas team will walk you through the transfer process.