--- title: "Strategic Sciences Black 300 BLK OTB Suppressor" description: "Black .300 Blackout OTB suppressor system with direct-thread 5/8x24 mounting, designed for subsonic and supersonic use with sound reduction to 128.20 dB." canonical_url: "https://www.kygunco.com/product/strategic-sciences-md-sd-black-300blk-0.0-otb-5-8x24-direct-thread" meta: author: KYGUNCO "og:description": "Black .300 Blackout OTB suppressor system with direct-thread 5/8x24 mounting, designed for subsonic and supersonic use with sound reduction to 128.20 dB." "og:image": "https://cdn.kygunco.com/assets/products/304744/thumbnail.jpg?v=1779204235" "og:image:height": "500" "og:image:width": "500" "og:title": "Strategic Sciences Black 300 BLK OTB 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-300BLK-0.0-MDSD-5/8X24-BK ![Main product image](https://static.kygunco.com/cdn-cgi/image/f=auto,w=600/assets/products/304744/main.jpg?v=1779204235) For illustration purposes only, this image may not be an exact representation of the product. # STRATEGIC SCIENCES MD + SD 300BLK 0.0 OTB 5/8X24 Direct Thread Suppressor - Black The Strategic Sciences MD + SD is a black .300 Blackout suppressor system with an over-the-barrel configuration and direct-thread 5/8x24 attachment. It is designed for subsonic and supersonic .300 BLK use, with stated reductions in flash, sound, and recoil. 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 # 304744 Style STR-MFMD-300BLK-0.0-MDSD-5/8X24-BK UPC 850083783501 Condition New Manufacturer [Strategic Sciences](https://www.kygunco.com/brand/strategic-sciences) Model MFMD Caliber 300 AAC Blackout Weight 2 lb Action Silencer The MD + SD Black 300BLK OTB Direct Thread suppressor system by Strategic Sciences is purpose-built to deliver exceptional signature reduction and control for .300 Blackout platforms. Featuring an advanced over-the-barrel design, it enhances balance while maintaining a compact footprint. Engineered as a complete system, it significantly reduces flash, sound, and recoil while preserving reliable cycling characteristics. Optimized for both subsonic and supersonic performance, this system is ideal for users demanding superior suppression and consistent results in real-world conditions. FEATURES - Over-the-barrel (OTB) design improves balance and handling - Direct thread attachment for secure and straightforward installation - Engineered system approach for maximum suppression efficiency - Designed for both subsonic and supersonic .300 BLK performance - Durable construction for sustained firing schedules - Maintains consistent operation with minimal system impact - Proven reduction in flash signature, sound output, and recoil impulse SPECIFICATIONS - Caliber: .300 Blackout - Mount Type: Direct Thread - Thread Pattern: 5/8x24 - Finish: Black - Configuration: OTB (Over-the-Barrel) - Model: 0.0 - Flash Reduction: Up to 90% (MD + SD system) - Sound Reduction: Down to 128.20 dB (\~26 dB reduction) - Recoil Reduction: Up to 30% - 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-300blk-0.0-otb-5-8x24-direct-thread#webpage","@type":"WebPage","description":"Black .300 Blackout OTB suppressor system with direct-thread 5/8x24 mounting, designed for subsonic and supersonic use with sound reduction to 128.20 dB.","name":"Strategic Sciences Black 300 BLK OTB 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