An AR-15 quad rail is a hand guard system featuring four Picatinny rail sections (top, bottom, and both sides) for mounting accessories like lights, grips, lasers, and sights. It works with AR-15 upper receivers, compatible barrels, gas blocks, gas tubes, and lower receivers. The quad rail replaces standard hand guards, providing a sturdy, customizable platform for tactical and sporting builds, allowing shooters to easily attach and arrange multiple accessories on their AR-15 rifle.
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