HR9 Integrally Suppressed Upper0 by admin2024-01-232024-06-01 Our HR9 integrally suppressed upper with integrated MEAN bearing delayed bolt system. This system comes with our proprietary SD barrel, SD suppressor, two 40 round ExoMag magazines allowing you to mate this with any AR-15 milspec lower you may have. HR9SD 9 months ago/ 170 views You may also like HiTec Arms SD Suppressor – Extreme Sound Suppression 41 views HR9SD,MP5SD,Suppressors Broad River Tactical CAR 15 SD – Integrally Suppressed HiTec Arms Suppressor 51 views HR9SD,Suppressors Caleb Downing is showing off a new project 67 views HR9SD,Suppressors HiTec Arms SD Suppressor Demo 114 views HR9SD,Suppressors Forgotten Weapons – BRT-HTA 132 views HR9SD HR9SD DB 173 views HR9SD