The Lantac M-Spec 556S (brand part no. 01-SUP-MSPEC556S) is a .223 Rem/5.56 NATO suppressor built in stainless steel, threaded 1/2×28 for direct attachment. Lantac USA builds the M-Spec series for AR-15 shooters who want a durable, mil-spec-focused can. The M-Spec 556S favors shooters who want a rugged stainless steel suppressor for hard use.

Key Specifications

• Rated for .223 Rem/5.56 NATO ammunition.
• Built in stainless steel.
• Threaded 1/2×28 for direct attachment.

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? A 1/2×28 threaded direct-mount system, not a quick-detach mount.

Buy the Lantac M-Spec 556S 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 Lantac‘s silencers and suppressed firearms lineup and our Lubbock, Texas team will walk you through the transfer process.