Lyman Sonicore Rekkr OB 5.56 1/2x28 Direct Thread Modular Suppressor Aluminum Steel Black

The Lyman Sonicore Rekkr OB (Over-Barrel) delivers heavy-duty suppression for high-volume shooting while minimizing overall rifle length through innovative over-barrel geometry. Unlike traditional suppressors that add their full length to the muzzle, the Rekkr OB overlaps a portion of the barrel, reducing total length addition and improving handling. Engineered for semi-automatic rifles with barrels 13.7 inches or longer, this direct thread suppressor combines 6026-T9 aluminum construction with 303 stainless steel core components to withstand enhanced fire schedules—up to 60 rounds in 30 seconds before requiring cool-down. The thicker walls compared to Lyman's Paradox model deliver maximum durability under rapid fire conditions. An integrated stainless steel muzzle brake serves as both a sacrificial first baffle and a self-tightening mechanism, continuously torquing the suppressor onto the muzzle during firing. The modular design allows users to shorten the suppressor when compactness ranks higher than absolute suppression. Over-Barrel Design Reduces Overall Length The Rekkr OB's over-barrel geometry allows the suppressor to overlap a portion of the barrel rather than extending entirely forward of the muzzle. This significantly reduces total length added to the rifle compared to conventional end-mounted suppressors. The rear section accommodates barrel outer diameters up to .745 inches, fitting standard AR-15 barrels and most lightweight profiles. The step-down design enables mounting under common AR-15 free-float handguards without interference, allowing the suppressor to tuck partially under the handguard for further length reduction and improved balance. Direct Thread Mounting The 1/2x28 direct thread mounting eliminates the expense of quick-detach muzzle devices and proprietary mounting systems. Simply thread the suppressor directly onto your barrel—no additional hardware required. This straightforward approach reduces total ownership cost while providing a solid, concentric mount that ensures proper alignment. Hybrid Aluminum and Steel Core Construction Aluminum baffle modules constructed from 6026-T9 aerospace-grade alloy provide lightweight strength, while 303 stainless steel baffle inserts create a durable steel "core" that withstands high-velocity gases. The stainless steel core features gas-disrupting grooves that enhance turbulence and improve suppression efficiency. This hybrid construction concentrates heat and wear resistance where it matters most while keeping overall weight manageable. Thicker Walls for Enhanced Fire Schedules The Rekkr OB features thicker walls specifically engineered for higher volume shooting. These reinforced walls withstand elevated heat and pressure from rapid fire sessions—up to 60 rounds in 30 seconds before requiring cool-down. This heavy-duty construction ensures longevity under demanding use that would stress thinner-walled designs, making the Rekkr OB ideal for training, competition, and tactical applications. Integrated Self-Tightening Muzzle Brake The integrated 303 stainless steel muzzle brake serves as a sacrificial baffle that absorbs the initial blast before it reaches the primary baffle stack. The brake's port geometry spins gases to continuously tighten the suppressor onto the muzzle threads during firing, eliminating loosening common with direct thread suppressors and maintaining proper alignment throughout shooting sessions. Modular and User-Serviceable Despite its heavy-duty construction, the Rekkr OB maintains modularity that allows users to remove baffle modules when compactness and handling take priority over maximum sound reduction. The heavy knurled exterior surface dramatically increases surface area for faster heat dissipation during high-volume shooting while providing superior grip when installing or removing the suppressor. Mil-Spec Hard Coat Anodize Finish The black, non-glare Mil-Spec hard coat anodize finish provides exceptional corrosion resistance and surface hardness. This military-specification coating withstands elevated temperatures and harsh conditions while maintaining a professional, low-visibility appearance. Minimum Barrel Length and Rate of Fire Requirements CRITICAL SAFETY INFORMATION: The Rekkr OB requires a minimum barrel length of 13.7 inches for 5.56/.223 applications. Users can fire up to 60 rounds rapid fire (example: 60 rounds in 30 seconds) before requiring a cool-down period. Full auto and forced reset triggers are prohibited. Operating below minimum barrel lengths or exceeding rate of fire recommendations voids warranty and creates serious safety hazards. The Lyman Sonicore Rekkr OB delivers heavy-duty suppression with over-barrel design that minimizes rifle length—a value-priced solution for semi-automatic rifle shooters. SPECIFICATIONS Manufacturer: Lyman Brand: Sonicore Model: Rekkr OB (Over-Barrel) Caliber: 5.56 NATO / .223 Remington Thread Pattern: 1/2x28 (Direct Thread) Design Type: Over-Barrel (OTB) Maximum Barrel OD: .745 inches Configuration: Modular (user-configurable length) Core Material: 303 Stainless Steel (baffle inserts with gas-disrupting grooves) Module Material: 6026-T9 Aluminum (baffle modules) Integrated Brake: 303 Stainless Steel (sacrificial first baffle, self-tightening) Finish: Black Mil-Spec Hard Coat Anodize (non-glare) Wall Thickness: Enhanced (thicker than Paradox model) Surface: Heavy knurled for heat dissipation and grip Design Features: Step-down rear for handguard compatibility Host Platform: Semi-automatic rifles (AR-15 optimized) Minimum Barrel Length: 13.7 inches (5.56/.223) Maximum Rate of Fire: 60 rounds rapid fire before cool-down required Prohibited: Full auto, forced reset triggers WARRANTY NOTICE: Usage below minimum barrel length or exceeding rate of fire schedule VOIDS WARRANTY