The Sig Sauer Hexium (brand part no. HEXIUM556INC) is a 5.56mm suppressor built from Inconel for low back pressure and quiet, clean tones across AR-platform rifles. Measuring 5.9 inches and threaded 1/2×28 via a hub direct-thread mount, the Hexium favors durability-focused rifle shooters.

Key Specifications

• Rated for .223 Rem/5.56 NATO.
• Measures 5.9 inches long.
• Built from Inconel for low back pressure.
• Mounts via 1/2×28 hub direct thread.

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 is it built from? Inconel, chosen for low back pressure and durability.

Buy the Sig Sauer Hexium 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, with an extended federal approval wait before delivery. Order through Sig Sauer‘s silencers and suppressed firearms lineup and our Lubbock, Texas team will walk you through the transfer process.