Strategic Sciences MFMD 5.56 0.0 OTB Suppressor -- MD Only 5.56 NATO ? 1/2x28 Direct Thread ? 0.0 Flush Mount ? Inconel Flow-Through ? FDE ? NFA The MFMD-MD is an NFA-regulated muzzle device engineered to deliver measurable signature and recoil reduction on 5.56 platforms. Designed for rifles with 1/2x28 threads, it mounts flush with a 0.0 over-the-barrel requirement--installation is possible only when the barrel shoulder sits even with or ahead of any obstruction, ensuring a true direct-thread interface. Installs using included shims and torque tool--no adapters required. Developed under contract with the U.S. military's Irregular Warfare Technology Support Directorate and engineered by Russ Oliver, founder of OSS Suppressors. 3D-printed monolithic Inconel construction. Flow-through internal geometry manages gas forward--no traditional baffles, no backpressure increase. Flash reduction approximately 40% vs. baseline flash hider. Sound reduction approximately 17 dB at right ear vs. baseline. Rearward recoil reduction approximately 53% vs. baseline. Bolt velocity change ?2% from baseline. FDE finish. NFA rules and regulations apply. All NFA items require tax stamp and transfer through licensed FFL dealer. Flow-Through Inconel Construction 3D-printed monolithic Inconel construction with flow-through internal geometry manages gas forward--eliminates traditional baffles and backpressure increase. The design vents combustion gases forward rather than rearward, keeping bolt velocity change to ?2% from baseline. 0.0 Flush OTB Mount Requires 0.0 over-the-barrel clearance--flush mount from barrel shoulder to first obstruction. Installation is possible only when the barrel shoulder sits even with or ahead of any obstruction. Measure carefully before ordering; if you don't have the clearance, it doesn't fit. Flash Reduction Approximately 40% flash reduction vs. baseline flash hider. The flow-through geometry redirects and cools combustion gases forward--reduces visible flash signature measurably in laboratory testing. Sound Reduction Approximately 17 dB sound reduction at right ear vs. baseline--achieved without SD or SDX extension components. The MD-only configuration delivers hearing-safe performance in compact dimensions. Recoil Reduction Approximately 53% rearward recoil reduction vs. baseline. The forward gas venting redirects propellant energy--reduces felt recoil and muzzle rise for faster follow-up shots. No Bolt Velocity Change Bolt velocity change of ?2% vs. baseline across all firing schedules. The flow-through design does not alter weapon cycling characteristics--no adjustable gas block required on host weapon. FDE Finish Flat Dark Earth (FDE) finish coordinates with FDE-configured weapon systems and accessories. Direct Thread Installation 1/2x28 direct thread installation using included shims and torque tool. No adapters required--precise alignment achieved with included hardware. Military Development Background Developed under contract with the U.S. military's Irregular Warfare Technology Support Directorate. Engineered by Russ Oliver, founder of OSS Suppressors--the flow-through gas management concept originated with military suppressor development. Modular System Compatibility MFMD-MD is the standalone muzzle device configuration. Also available bundled with SD (short suppressor extension) or SDX (long suppressor extension) for increased sound suppression. NFA Item NFA-regulated item. Requires completion of NFA tax stamp process and transfer through licensed Class III FFL dealer. The Strategic Sciences MFMD 5.56 0.0 OTB FDE delivers military-developed flow-through suppression--Inconel construction with flush mount for 5.56 signature and recoil reduction. Specifications: Manufacturer: Strategic Sciences Model: MFMD-5.56-0.0-MD-1/2X28-FDE UPC: 850083783013 Caliber: 5.56x45 NATO / .223 Thread Pattern: 1/2x28 Mounting Type: Direct Thread OTB Requirement: 0.0 (Flush from Barrel Shoulder) Construction: 3D-Printed Monolithic Inconel Internal Geometry: Flow-Through (Baffle-Free) Finish: FDE (Flat Dark Earth) Flash Reduction: ~40% vs. Baseline Flash Hider Sound Reduction: ~17 dB at Right Ear vs. Baseline Rearward Recoil Reduction: ~53% vs. Baseline Bolt Velocity Change: ?2% from Baseline Backpressure: No Increase Installation Hardware: Shims and Torque Tool (Included) NFA Status: NFA-Regulated (Tax Stamp Required) Transfer: Class III FFL Required Development: U.S. Military IWTSD Contract Origin: USA (SDVOSB)