You don't want to be on the other end of this:
U.S. Army Unveils 'Revolutionary' XM25 Rifle in Afghanistan - FoxNews.com: "A potential battlefield scenario, according to Army officials, might go something like this:
-- A patrol encounters an enemy combatant in a walled Afghan village who fires an AK-47 intermittently from behind cover, exposing himself only for a brief second to fire.
-- The patrol's leader calls for the XM25 gunman, who uses the weapon's laser range finder to calculate the distance to the target.
-- He then uses an incremental button located near the trigger to add 1 meter to the round's distance, since the enemy is hiding behind a wall.
-- The round is fired, and it explodes with a blast comparable to a hand grenade past the wall and above the enemy."