R-15 VTR modular repeating rifle was born of the most advanced design aspects of AR-15-style rifles available today with a strong emphasis on optimizing form and functionality for the modern predator aficionado. The results are astounding with very serious implications for every coyote, fox, or bobcat that crosses its path. For peak accuracy, the R-15's 0.680" OD barrel is precision-crafted from ChroMoly steel. It s free-floated within the machined-aluminum fore-end tube and given a recessed hunting crown to ensure gasses escape evenly around the bullet for the ultimate in shot-to-shot consistency. Six longitudinal flutes forward of the gas block promote rapid barrel cooling and increase rigidity while reducing weight, further contributing to this rifles ability to print tiny clusters at an incredible pace. This hunting single-stage trigger design is as clean breaking as they come. Whether you choose the 223 Remington or 204 Ruger version, the semi-automatic gas action all but eliminates muzzle jump and recoil so your target remains in the crosshairs. And when it s time to add optics, the receiver-length Picatinny rail makes it a rock-solid cinch.