The M89H heavy handguard introduces our advanced drive lock system to large frame SR25/DPMS high shelf pattern firearms. With a titanium barrel nut, it features full-length M-LOK attachment slots at 3, 6 and 9 o'clock positions, along with two integrated steel QD sockets that allow limited rotation. Additionally, fast slots positioned under the 12 o'clock rail accommodate zip ties for secure cable management. Engineered for users who prioritize durability, our 89 series of handguards is renowned for its robustness. Offering maximum strength, extensive mounting space and utilizing lightweight materials, the M89H stands as one of the most formidable handguards available today, ideal for demanding shooting environments.