Mission®  Crossbows leads the industry with the first-ever silent mechanical cocking device for crossbows. The patented RSD™ fits all Mission®  Crossbows and can be installed or removed in a matter of a few seconds. In addition to being completely silent, the RSD™ improves accuracy through the use of a floating rope-pull that ensures equal tension is applied to each side of the bowstring during the draw. Made in the USA.