Lyman Sonicore Rekkr OB 30 Cal 5/8x24 Over-Barrel Direct Thread Modular Suppressor

The Lyman Sonicore Rekkr OB 30 Cal delivers heavy-duty suppression for .300 Blackout and .308 Winchester 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. This direct thread suppressor combines 6026-T9 aluminum construction with 303 stainless steel core components to withstand enhanced fire schedules while remaining practical for field use. The thicker walls deliver maximum durability under rapid fire conditions—up to 30 rounds in 15 seconds for .308 Win before requiring cool-down. 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-10 and bolt-action barrels. The step-down design enables mounting under common free-float handguards without interference, allowing the suppressor to tuck partially under the handguard for further length reduction and improved balance. 5/8x24 Direct Thread Mounting The 5/8x24 direct thread mounting is the industry standard for .30 caliber rifles, fitting .300 Blackout, .308 Winchester, and other .30 cal platforms. This straightforward approach eliminates the expense of quick-detach muzzle devices and proprietary mounting systems 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. Multi-Caliber Versatility The Rekkr OB 30 Cal handles both subsonic and supersonic .300 Blackout as well as .308 Winchester, providing exceptional versatility across multiple platforms. The robust construction withstands the higher pressures of .308 Win while delivering optimal suppression for quieter subsonic .300 BLK loads. 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 The heavy-duty construction 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: .300 BLK Subsonic: Minimum barrel length of 8.5 inches. No full auto or Forced Reset Triggers. .300 BLK Supersonic: Minimum barrel length of 8.5 inches. No full auto or forced reset triggers. .308 Win: Minimum barrel length of 18 inches. Users can fire up to 30 rounds rapid fire (example: 30 rounds in 15 seconds) before requiring a cool-down period. No full auto or forced reset triggers. Operating below minimum barrel lengths or exceeding rate of fire recommendations voids warranty and creates serious safety hazards. The Lyman Sonicore Rekkr OB 30 Cal delivers heavy-duty multi-caliber suppression with over-barrel design that minimizes rifle length—a value-priced solution for .300 BLK and .308 Win shooters. SPECIFICATIONS Manufacturer: Lyman Brand: Sonicore Model: Rekkr OB 30 Cal (Over-Barrel) Caliber: .300 Blackout (subsonic/supersonic), .308 Winchester Thread Pattern: 5/8x24 (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 Minimum Barrel Length (.300 BLK Subsonic): 8.5 inches Minimum Barrel Length (.300 BLK Supersonic): 8.5 inches Minimum Barrel Length (.308 Win): 18 inches Rate of Fire (.300 BLK): No full auto or forced reset triggers Rate of Fire (.308 Win): 30 rounds rapid fire (e.g., 30 rounds in 15 seconds) before cool-down required. No full auto or Forced Reset Triggers WARRANTY NOTICE: Usage below minimum barrel length or exceeding rate of fire schedule VOIDS WARRANTY