Report I read said the attacker killed his mother-in-law-to-be with a knife, his father with the crossbow and himself with a knife.
Thank God there are no high-capacity magazines for crossbows. Can you imagine how many lives would have been lost?
$20 says the assault crossbow he used had a collapsible stock, pistol grip and barrel shroud. A flash-hider, suppressor and high-cap mag would have made that thing any spree-murderer's dream weapon.
"Guns always work better the cleaner they are... Remember to keep it lubed always and clean it when you can and you will be much better off over the long haul." -Larry Vickers