Strike Industries Oppressor, Blast Shield, Multi-Cal, Black SI-OPPRESSOR The Strike Industries Oppressor represents the next evolution in concussion reduction devices. Typical concussion reduction devices simply sleeve the brake" with a simple open end to redirect gasses. The OPRESSOR is compatible with the SI muzzle devices to include: Venom-FH" Checkmate Comp" King Comp" MK-9 Comp" J-Comp Gen2" Sierra Comp" and Triple Crown Comp. While this does accomplish reducing side concussion" braking performance becomes reduced as well. Designed with computer aided flow dynamics" the SI Oppressor provides a no compromise solution for redirecting the overpressure produced by aggressive brakes and compensators. Advanced internal geometry actively draws the gasses out and thrusts the gasses forward through vents to accomplish linear braking in order to retain more braking efficiency. Using a proprietary quick detach mounting system" the Oppressor can be rapidly installed before transitioning to prone shooting positions" or for indoor use.