Introducing the M89H heavy handguard, tailored for large frame SR25/DPMS high shelf pattern rifles and showcasing our advanced drive lock handguard system. Equipped with a durable titanium barrel nut, this handguard features full-length M-LOK attachment slots at 3, 6 and 9 o'clock positions, along with integrated steel QD sockets for limited rotation. Additionally, fast slots beneath the 12 o'clock rail provide convenient zip tie mounting for cables. built for users who prioritize rigidity, the M89H combines maximum strength with ample mounting space, utilizing lightweight materials for optimal weight savings. Renowned for its robustness and versatility, the M89H stands as one of the most formidable handguard options available today, ideal for demanding operational environments.