--- title: "STRATEGIC SCIENCES MD + SDX Black 5.56 1.3 OTB 1/2X28 Direct Thread" canonical_url: "https://www.kygunco.com/product/strategic-sciences-md-sdx-black-5.56-1.3-otb-1-2x28-direct-thread" meta: author: KYGUNCO "og:image": "https://cdn.kygunco.com/assets/products/304714/thumbnail.jpg?v=1779998358" "og:image:height": "500" "og:image:width": "500" "og:title": "STRATEGIC SCIENCES MD + SDX Black 5.56 1.3 OTB 1/2X28 Direct Thread" --- > 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) / STR-MFMD-5.56-1.3-MDSDX-1/2X28-BK ![Main product image](https://static.kygunco.com/cdn-cgi/image/f=auto,w=600/assets/products/304714/main.jpg?v=1779998358) For illustration purposes only, this image may not be an exact representation of the product. # STRATEGIC SCIENCES MD + SDX Black 5.56 1.3 OTB 1/2X28 Direct Thread Suppressor - Black See Price In Cart ** 5 interest-free payments of **$436.20** with ![Sezzle logo](https://www.kygunco.com/brands/sezzle.svg) ** Online In Store [** KYGUNCO Bardstown 401 Glenwood Drive, Bardstown KY](https://www.google.com/maps/dir/?q=place_id:ChIJfwecWCBSaIgRguIjuoPha40) [** KYGUNCO Louisville 2301 Nelson Miller Parkway, Louisville KY](https://www.google.com/maps/dir/?q=place_id:ChIJu1yzo5WZaYgRU5lrq2lQNhI) Item # 304714 Style STR-MFMD-5.56-1.3-MDSDX-1/2X28-BK UPC 850083783204 Condition New Manufacturer [Strategic Sciences](https://www.kygunco.com/brand/strategic-sciences) Model MFMD Caliber 5.56 NATO Weight 2 lb Action Silencer The Strategic Sciences MD + SDX is a compact over-the-barrel suppressor system designed to integrate muzzle device performance with sound suppression in a single, streamlined unit. Built for 5.56 platforms, it maintains balance and handling through its OTB configuration while delivering reduced signature and durable, consistent performance in a lightweight profile. FEATURES - MD + SDX integrated design combines muzzle device and suppressor functionality - Over-the-barrel (OTB) configuration reduces added length and improves balance - Direct thread attachment provides simple, secure mounting - Compact 1.3" diameter maintains a low-profile footprint - Optimized for 5.56 platforms with reduced flash and signature - Durable construction supports consistent performance under sustained use - Lightweight design enhances handling and maneuverability - Black finish improves corrosion resistance and surface durability SPECIFICATIONS - Caliber: 5.56 - Mount type: Direct thread - Thread pattern: 1/2x28 - Diameter: 1.3" - Configuration: Over-the-barrel (OTB) - Finish: Black ** 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/strategic-sciences-md-sdx-black-5.56-1.3-otb-1-2x28-direct-thread#webpage","@type":"WebPage","description":"Shop KYGUNCO for firearms, ammo, accessories, parts, and outdoor gear at low prices with fast, easy nationwide shipping.","name":"STRATEGIC SCIENCES MD + SDX Black 5.56 1.3 OTB 1/2X28 Direct 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