American Built Arms is proud to introduce the AB ARMS MOD1 Hand guard.Specifications:- This hand guard is a 2 piece design with upper and lower heat shields for maximum cooling. - Designed and engineered to accommodate gas piston or direct gas impingement systems. - For carbine-length AR15/M16 Rifles - Purpose built ergonomic hand grip area with hand stop and heavy texture.- Proprietary formula of heat stabilized nylon reinforced with high strength fibers.- 1/2 the weight of aluminum hand guards- Modular design will accommodate after market rail systems for a truly customized weapon system