The Chaos Gear Supply SCI-SIX (brand part no. CGS-SCISIX) is a .223 REM/5.56 NATO suppressor. Chaos Gear Supply builds it for shooters seeking dependable sound suppression on a compatible host firearm.

Key Specifications

• Rated for .223 REM/5.56 NATO ammunition.
• Mounts via a quick-attach flash-hider mount.
• Built from 718 Inconel for added heat resistance under sustained fire, weighing about 17 ounces.
• Has a 1.75-inch body diameter and ships with a 1/2×28 flash-hider mount.

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 caliber is it rated for? .223 REM/5.56 NATO.

How does it mount? It mounts via a quick-attach flash-hider mount. No tools are needed to attach or remove it once that flash hider is installed on your barrel.

Buy the Chaos Gear Supply SCI-SIX Suppressor, .223 REM/5.56 NATO

This is a Title II item regulated under the National Firearms Act. Purchase requires an approved ATF Form 4 and transfer through a licensed NFA (SOT/Class 3) dealer, with no federal transfer tax and an extended federal approval wait before delivery. Order through Chaos Gear Supply‘s silencers and suppressed firearms lineup and our Lubbock, Texas team will walk you through the transfer process.