The Ultimate Crossbow for High-Performance Hunters Delivering 515 FPS with 70% tighter groups at 100-yards, combined with the ACUslide MAXX™ & TriggerTech trigger, the TRX Ultra is THE ultimate crossbow for high-performance hunters! In addition to NEW ZERO-TORSION Technology, ACU-X RD Arrow, and Premium String, the TRX Ultra Feature a NEW BRUSHLESS MACHINED ALUMINUM ARROW REST that secures to the barrel & NEW riser rod, isolating it from SDS vibration to eliminate shift & deliver the ultimate in