Ballista Bat Crossbow with Magazine Durable 6061 T6 aluminum construction 5-bolt magazine Max. velocity: 300 FPS 130 lbs. limbs Draw weight: 40 lbs. (w/built-in self-retracting cocking rope and handle) Last-shot lock prevents accidental dry firing Power stroke: 6.75" Universal 21mm Picatinny rail Overall length: 16" (w/stirrup) Width: 5" (cocked), 8" (uncocked) Weight: 2.9 lbs. Includes 5 practice bolts (10.5")