I could be wrong about the older ones, but in at least the past 2-3 years they are 58" AMO--bow length. The latest 3 Rivers catalog has them listed as 58", and the one my buddy was shooting yesterday (2-3 years old, maybe older) is a 58". The Hatfield and Hunter are 62" though.

Fool-proof way to check that one is look at the writing on the riser--it will be marked with the draw weight and AMO bow length.

Chad