--- title: "Strategic Sciences 5.56 OTB Direct Thread Suppressor" description: "Black 5.56 suppressor with an OTB configuration, 1/2x28 direct-thread mount, up to 98% flash reduction, and up to 58% recoil reduction." canonical_url: "https://www.kygunco.com/product/strategic-sciences-md-sd-black-5.56-0.0-otb-1-2x28-direct-thread" meta: author: KYGUNCO "og:description": "Black 5.56 suppressor with an OTB configuration, 1/2x28 direct-thread mount, up to 98% flash reduction, and up to 58% recoil reduction." "og:image": "https://cdn.kygunco.com/assets/products/304697/thumbnail.jpg?v=1779201731" "og:image:height": "500" "og:image:width": "500" "og:title": "Strategic Sciences 5.56 OTB Direct Thread 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) / STR-MFMD-5.56-0.0-MDSD-1/2X28-BK ![Main product image](https://static.kygunco.com/cdn-cgi/image/f=auto,w=600/assets/products/304697/main.jpg?v=1779201731) For illustration purposes only, this image may not be an exact representation of the product. # STRATEGIC SCIENCES MD + SD 5.56 0.0 OTB 1/2X28 Direct Thread Suppressor - Black The Strategic Sciences MD + SD 5.56 suppressor uses an over-the-barrel configuration and 1/2x28 direct-thread interface for 5.56 platforms. Its black finish and OTB design support improved balance, while the MD + SD system is engineered to reduce flash, sound, and felt recoil with minimal bolt velocity change. See Price In Cart ** 5 interest-free payments of **$418.80** 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. Almost gone. Order now before it sells out. Item # 304697 Style STR-MFMD-5.56-0.0-MDSD-1/2X28-BK UPC 850083783020 Condition New Manufacturer [Strategic Sciences](https://www.kygunco.com/brand/strategic-sciences) Model MFMD Caliber 5.56 NATO Weight 2 lb Action Silencer The MD + SD Black 5.56 OTB Direct Thread suppressor is a performance-driven system engineered to dramatically reduce flash signature, sound output, and felt recoil on 5.56 platforms. Utilizing an advanced over-the-barrel design, it improves weapon balance while delivering measurable performance gains in real-world conditions. When paired within the MD + SD system, it achieves substantial reductions across multiple shooting metrics, making it an ideal solution for users prioritizing control, signature reduction, and consistency in demanding environments. FEATURES - Over-the-barrel (OTB) design enhances balance and handling - Direct thread interface provides simple and secure attachment - Engineered for significant flash, sound, and recoil reduction - Optimized for consistent performance with minimal bolt velocity change - Durable construction built for sustained use - System-driven performance with measurable real-world improvements SPECIFICATIONS - Caliber: 5.56 - Mount Type: Direct Thread - Thread Pattern: 1/2x28 - Finish: Black - Configuration: OTB (Over-the-Barrel) - Model: 0.0 - Flash Reduction: Up to 98% (MD + SD system) - Sound Reduction: Down to 135.42 dB (\~23 dB reduction) - Recoil Reduction: Up to 58% - Bolt Velocity Shift: ±2% ** 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-sd-black-5.56-0.0-otb-1-2x28-direct-thread#webpage","@type":"WebPage","description":"Black 5.56 suppressor with an OTB configuration, 1/2x28 direct-thread mount, up to 98% flash reduction, and up to 58% recoil reduction.","name":"Strategic Sciences 5.56 OTB Direct Thread 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