3wraps - 3 bands extra long shaft - Hawaiian. 9/16 bands, enclosed track. As mentioned - only shot it once so far

If I'd used all three bands I'd have had a logistical problem. Very nicely put together piece of kit. With the nylon/glass muzzle they are saying 3 5/8 or 4 9/16th. Depending how much I end up using it, and where, it might be fun to try some different combos.
Aiming seems pretty intuitive.