Barry Bonds -- Free to Swing 'Dangerous' Baseball Bats ... Again

Barry Bonds has federal approval to pickup a "dangerous weapon" -- namely, a baseball bat -- thanks to a new court order.

Bonds is appealing his sentence for felony obstruction of justice -- but for now he's free on a few conditions ... one of which is he cannot possess any "firearm, ammunition, destructive device, or other dangerous weapon."

Barry must want to take some batting practice -- because according to docs filed yesterday ... a federal judge has approved his request to make an exception for baseball bats.