Doctrine and why the Grendel has an uphill battle.

[SHORT-N-SASSY]

. . . Realistically a grunt needs to carry as many rounds as possible, be able to engage to 500 meters, be able to lay a heavy volume of fire as accurately as possible. 5.56 does these things pretty well.

Sure there are rounds that are more effective, but 5.56 does everything well enough.

(http://bullpupforum.com/index.php?topic=...0#msg22280)

Taking Back the Infantry Half-Kilometer (http://www.defensetech.org/2010/03/01/ta...kilometer/) NOTE: Click-on "Increasing Small Arms Lethality in Afghanistan: Taking Back the Infantry Half-Kilometer" in first paragraph.