I've been using the wrong bible!

From my favorite translation, the NASB: 

He killed an Egyptian, a man of great stature five cubits tall. Now in the Egyptian’s hand was a spear like a weaver’s beam, but he went down to him with a club and snatched the spear from the Egyptian’s hand and killed him with his own spear. (1 Chron 11:23, NASB)

And from the New American (Catholic) Bible: 

He likewise slew the Egyptian, a huge man five cubits tall. The Egyptian carried a spear that was like a weaver's heddle-bar, but he came against him with a staff, wrested the spear from the Egyptian's hand, and killed him with his own spear. (1 Chron 11:23)

What's up with that? My brother once owned a Heddle Bar-- sold mostly Iron City Beer as I recall.