The TAPCO InTRAfuse AR Handguard is designed to address the needs of every shooter - both civilian and tactical professionals. Constructed of highstrength composite, this handguard is extremely durable and offers a 50 percent weight reduction over comparable aluminum systems. The Picatinny rails located at 3, 6, 9, and 12 o'clock enables the shooter to mount vertical grips, flashlights, and aiming lasers to their weapon. Designed as a true modular system, TAPCO's handguard includes covers for both the bottom rail and the side rails so officers can configure the weapon to suit any needs. Uncover the rails officers need to use and leave the cover on for the ones don't. numerous ventilation holes provide plenty of air circulation to reduce barrel overheating. fits the standard carbine barrel configuration.