Bushmaster's Quick Response Carbine is ready for the range right out of the box. It starts with a 16" superlight contour chrome-moly barrel with Melonite treatment for longevity and ease of cleaning. The receiver is hard-coat anodized and coated with Teflon, making it corrosion-resistant and able to stand up to the wear and tear of high-volume shooting with ease. The polymer M4 stock has adjusts with six positions to fit you perfectly. Additional features include: a Mil-Spec single stage trigger, a switch-style safety, and an A2 birdcage flash hider. This model comes optics-ready with a picatinny top rail.