The Troy Industries Kryptos (brand part no. SSIL556KRKTBT) is a full-auto-rated, over-the-barrel suppressor for 5.56, constructed from aerospace-welded 17-4 and 304 stainless steel. Troy Industries engineers the Kryptos with a patented baffle system for superior cross-sectional structural integrity. The Kryptos favors 5.56-platform shooters who want a full-auto-rated suppressor built for demanding, sustained use.

Key Specifications

• Rated for .223 Rem/5.56 NATO for AR-platform sound suppression.
• Measures 1.65 inches long for a compact, over-the-barrel footprint.
• Built from 17-4 and 304 stainless steel for aerospace-grade durability.
• Finished in black.
• Rated for full-auto use.
• Mounts via Troy’s TPRS quick-attach 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.

Is it rated for full-auto fire? Yes, the Kryptos is full-auto rated.

How does it mount? Troy’s TPRS quick-attach mount. No tools needed to attach or remove once the TPRS muzzle device is installed.

Buy the Troy Industries Kryptos 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 Troy Industries‘s silencers and suppressed firearms lineup and our Lubbock, Texas team will walk you through the transfer process.