Patented reverse-draw technology shifts the riser from the front of the crossbow to the center, eliminating the "nose-heavy" feel of traditional crossbows and creating an elongated power stroke for smoother and faster shooting The RDX 400 features a perfectly balanced reverse-draw bow assembly and our Reaper Cam System that together deliver consistent down-range accuracy and lighting speeds up to 400 FPS Machined lightweight aluminum riser and pockets provide added cushioning that reduces limb stress - adding years of performance on your crossbow Features a noise dampening integrated string stop system that is pre-installed. Power Stroke: 15. 5 inch Focused on speed-to-price ratio, the RDX 400 includes a complete package with a cocking device