Sig Sauer Hexium 5.56 HEXIUM556INC | 1/2×28 Direct Thread

The SIG SAUER HEXIUM556INC is a 5.56 NATO-rated suppressor featuring a HUB taper direct-thread mount for secure attachment to 1/2×28 barrels. The unit is manufactured with an Inconel exterior and is engineered for low back pressure to preserve rifle gas systems. With a compact 5.9″ overall length and a 1.75″ diameter, it balances durability and manageable profile on AR-platform rifles.

Typical applications include range training and precision/competition shooting where reduced recoil impulse and consistent gas behavior are priorities.

Product Specifications

• The caliber is .223 REM/5.56 NATO.
• The primary material is listed as Inconel.
• The thread pattern is 1/2×28.
• The attachment type is Hub Taper Direct Thread.
• The overall length is 5.9 inches.
• The diameter measures 1.75 inches.
• The weight is 20 ounces.
• The finish is Black Cerakote.
• Full-auto rating is listed as No.
• The NFA thread pattern is 1/2×28.
• The NFA Form 3 caliber is .223 REM/5.56 NATO.
• The ATF type is SILENCER.
• The ATF model is HEXIUM556INC.
• Notable features include low back pressure and an end cap accessory mounting system.
• The UPC is 798681731688.

The Hexium556INC is engineered to deliver consistent, low-back-pressure performance in a compact package. Its hub taper direct-thread mounting system simplifies attachment while the external hex pattern and Cerakote finish provide a durable, non-reflective surface. The integrated end cap accessory mounting system and modular design make it adaptable for a range of modern rifle setups.

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