1 Chronicles 12:2

armed with bows, using both the right hand and the left with stones and with arrows on the bow; they were of Saul's brethren of Benjamin:

Judges 3:15

But when the people of Israel cried to the LORD, the LORD raised up for them a deliverer, Ehud, the son of Gera, the Benjaminite, a left-handed man. The people of Israel sent tribute by him to Eglon the king of Moab.

Judges 20:16

Among all these were seven hundred picked men who were left-handed; every one could sling a stone at a hair, and not miss.

1 Samuel 17:49

And David put his hand into the bag, and took thence a stone, and slang it, and smote the Philistine in his forehead, and the stone sank into his forehead; and he fell on his face to the earth.

1 Chronicles 12:29

And of the children of Benjamin, the brethren of Saul, three thousand; but hitherto the greater part of them had adhered to the house of Saul.

Treasury of Scripture Knowledge

Summary

They were armed with bows, and could use both the right hand and the left in hurling stones and shooting arrows out of a bow, even of Saul's brethren of Benjamin.

In hurling

Bible References

Could use

Judges 3:15
But when the people of Israel cried to the LORD, the LORD raised up for them a deliverer, Ehud, the son of Gera, the Benjaminite, a left-handed man. The people of Israel sent tribute by him to Eglon the king of Moab.
Judges 20:16
Among all these were seven hundred picked men who were left-handed; every one could sling a stone at a hair, and not miss.

In hurling

1 Samuel 17:49
And David put his hand into the bag, and took thence a stone, and slang it, and smote the Philistine in his forehead, and the stone sank into his forehead; and he fell on his face to the earth.