Lantac USA M-SPEC556S 5.56/.223 Suppressor

When you need a precision-welded, full-auto-rated 5.56 suppressor built from premium 17-4 stainless steel and tested to the SOCOM endurance firing schedule, the Lantac USA M-SPEC556S delivers American-made performance with broad HUB mounting compatibility.

The Lantac USA M-SPEC556S is a .223/5.56mm suppressor designed for AR-15 shooters who demand a rigorously tested, welded-construction suppressor with universal HUB compatibility and made-in-the-USA build quality.

Precision machined from 17-4 Precipitation Hardened Stainless Steel in H900 condition — the same corrosion-resistant, high-strength alloy used in demanding aerospace and defense applications — the M-SPEC556S is built to last. The tubeless baffle design uses 360° full-penetration laser welding with high-energy lasers to create complete weld joints with minimal distortion and thermal stress, improving baffle alignment and suppression consistency over the life of the can. The M-SPEC556S has been tested to 130dB per MIL-STD-1474E and endurance-tested to the SOCOM firing schedule, confirming safe full-auto use with adequate cooling between magazines. With a 6.0" length and 13.5oz weight (both without mount), it adds minimal bulk while delivering genuine military-spec sound attenuation.

Compatible with .223 Remington and 5.56mm NATO. Minimum barrel length 7.5" for 5.56mm; 10.5" for 6mm ARC. Comes standard with a 1/2-28 UNEF direct-thread HUB adapter, compatible with any standard 1.375x24 TPI HUB mounting system — use your preferred muzzle device without additional adapters. Body diameter 1.610" flaring to 1.677" at the knurled base. Warrantied against manufacturing defects. Made in the USA.

The 17-4 PH stainless steel H900 construction provides superior corrosion resistance and long service life compared to standard 304 or 316 stainless options. The precision CNC laser welding process creates 360° full-penetration welds with minimal distortion, ensuring baffle alignment is maintained for consistent suppression performance throughout the service life of the suppressor.

An excellent choice for duty AR-15 builds, suppressed range use, competition, and law enforcement applications where a full-auto-rated, SOCOM-tested 5.56 suppressor with universal HUB compatibility is required. The included 1/2-28 HUB adapter means out-of-the-box compatibility with standard direct-thread installations.

Lantac USA backs the M-SPEC556S against manufacturing defects. Made in Fort Worth, Texas, USA. NFA rules apply — purchase requires approved ATF Form 4 transfer.