--- title: "Sig Sauer Hexium 5.56 NATO Suppressor" description: "5.56 mm suppressor with a 3D-printed Inconel body, HUB-compatible direct-thread mount, 1/2x28 threading, modular end cap, and black Cerakote finish." canonical_url: "https://www.kygunco.com/product/sig-sauer-hexium-5.56-nato-inconel-suppressor" meta: author: KYGUNCO "og:description": "5.56 mm suppressor with a 3D-printed Inconel body, HUB-compatible direct-thread mount, 1/2x28 threading, modular end cap, and black Cerakote finish." "og:image": "https://cdn.kygunco.com/assets/products/289604/thumbnail.jpg?v=1750684541" "og:image:height": "500" "og:image:width": "500" "og:title": "Sig Sauer Hexium 5.56 NATO Suppressor" --- > Index of every page on this site: [llms.txt](https://www.kygunco.com/llms.txt) [Home](https://www.kygunco.com/) / [Shooting](https://www.kygunco.com/category/shooting) / [Guns](https://www.kygunco.com/category/shooting/guns) / [Class III](https://www.kygunco.com/category/shooting/guns/class-iii) / [Suppressors](https://www.kygunco.com/category/shooting/guns/class-iii/suppressors) / SGS-HEXIUM556INC ![Main product image](https://static.kygunco.com/cdn-cgi/image/f=auto,w=600/assets/products/289604/main.jpg?v=1750684541) For illustration purposes only, this image may not be an exact representation of the product. # SIG SAUER HEXIUM 5.56 NATO Inconel Suppressor The Sig Sauer Hexium 556 Inc is a 5.56 mm suppressor with a 3D-printed Inconel body and monolithic internal structure. It features low back pressure, refined baffle geometry, a HUB-compatible direct-thread mount, 1/2x28 threading, a modular tool-less end cap interface, and a black high-temperature Cerakote finish. Diameter is 1.75 inches, length is 5.9 inches, and weight is 20 ounces. $899.99 ** 5 interest-free payments of **$180** with ![Sezzle logo](https://www.kygunco.com/brands/sezzle.svg) ** Online In Store ** Free Shipping Enjoy delivery to the Lower 48 States at no cost. ** NFA / Class 3 NFA transfer requirements vary by product and location. Additional documentation, approvals, or a qualified dealer may be required. Check local and state regulations to ensure eligibility and compliance before purchasing. ** Ships To FFL Dealer Handled by our expert shippers in Bardstown, KY. ** Check Local Restrictions Not sure whether this item can be shipped to your area? Enter your ZIP code for a quick check. Selling fast. Limited quantities available. Item # 289604 Style HEXIUM556INC UPC 798681731688 Condition New Manufacturer [Sig Sauer](https://www.kygunco.com/brand/sig-sauer) Model Hexium Caliber 5.56 NATO Weight 20 oz Action Silencer The Hexium 556 Inc stands out for its use of a 3D printed Inconel core, a material known for its extreme resistance to heat and pressure. Inconel's superior thermal properties make this suppressor ideal for high-rate-of-fire scenarios, including suppressed short-barreled rifles and duty carbines. The monolithic internal structure, printed as a single unit, enhances reliability by eliminating seams or welds that could degrade over time under heat cycling. Sig Sauer integrates a HUB-compatible taper mount on the Hexium 556 Inc, offering wide modularity and a secure barrel interface. This mounting system reduces thread stress and improves concentricity for improved accuracy and gas seal performance. The included 1/2x28 direct thread adapter ensures the suppressor is ready for immediate use on standard 5.56 NATO barrels, making it a plug-and-play option for AR-15 users. Externally, the suppressor is finished in black Cerakote for corrosion resistance and low-visibility performance. The front end cap is modular and can be replaced or tuned for different gas volumes or muzzle pressure characteristics. With a total weight of 19 ounces, the Hexium 556 Inc balances strength and size in a suppressor tailored to rigorous use. Whether for tactical applications, training, or advanced competition setups, this suppressor offers precision sound control in a compact footprint. **Features** - Low back pressure design for reduced gas-to-face and cleaner operation - Refined baffle geometry for quiet, consistent sound - HUB compatible with Direct Thread steel mount - Tool-less modular end cap accessory interface - External hex pattern with black hi-temp Cerakote finish - 3D-printed Inconel suppressor body - Infinite Guarantee **Specifications** - Model: HEXIUM556INC - Caliber: 5.56 mm - Material: Inconel - Diameter: 1.75 in - Overall Length: 5.9 in (150 mm) - Weight: 20 oz (567 g) - Attachment Type: HUB compatible, Direct Thread steel mount - Thread Pitch: 1/2×28 - Finish: Black hi-temp Cerakote Shop with KYGUNCO for the best selection, competitive pricing, and exceptional customer service. Experience the difference that comes with buying from a trusted outdoor retailer with over 20 years of experience in the industry. ** WARNING: This product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to [www.p65warnings.ca.gov](https://www.p65warnings.ca.gov). ## Frequently Bought Together 0.0 ** ** ** ** ** 0 reviews ** ** ** ** ** 0 ** ** ** ** ** 0 ** ** ** ** ** 0 ** ** ** ** ** 0 ** ** ** ** ** 0 ## Don't Forget Your Ammo ```json {"@context":"https://schema.org","@graph":[{"@id":"https://www.kygunco.com/#website","@type":"WebSite","description":"Shop KYGUNCO for firearms, ammo, accessories, parts, and outdoor gear at low prices with fast, easy nationwide shipping.","name":"KYGUNCO","url":"https://www.kygunco.com/","publisher":{"@id":"https://www.kygunco.com/#/schema/organization/kygunco"}},{"@id":"https://www.kygunco.com/product/sig-sauer-hexium-5.56-nato-inconel-suppressor#webpage","@type":"WebPage","description":"5.56 mm suppressor with a 3D-printed Inconel body, HUB-compatible direct-thread mount, 1/2x28 threading, modular end cap, and black Cerakote finish.","name":"Sig Sauer Hexium 5.56 NATO 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