Barnett Crossbows HyperTac 400 Crossbow. The ultra-compact design isn't the only thing downsized on this new model however. The bow amplifies Barnett Crossbows's Hyper? series crossbow lineup and shoots the small-diameter extreme penetrating HyperFlite? .204 diameter arrows. Specifications for Barnett Crossbows HyperTac 400 Crossbow 431776: Manufacturer: Barnett Crossbows Length: 33 Width: 12.75 in Weight: 9 oz Additional Features: No Height: 7.13 in Package Contents: Barnett Crossbows HyperTac 400 Crossbow Barnett Crossbows BAR78119: HyperTac 400 Crossbow 431776