The SUU-7 was a device used to release hundreds of small bomblets over a target. Externally mounted under an aircraft, the SUU-7 ejected the bomblets through openings in the rear (the SUU-7 itself was not dropped).
This SUU-7 is loaded with 1.75-lb. BLU-3/B antipersonnel bomblets for use against enemy troops and unarmored targets. The bomblets exploded upon impact, with each one sending out about 250 steel pellets at high velocity.