Don’t think so because most Gamma tensioner have a string guide on the and the Eagnas tension bar wont be low enough to accommodate it. If you did but it on the Eagnas there is no guarantee the teeth on the tension arm would be the same on the Eagnas and Gamma.
EDIT: Just to clear things up are you talking about Alpha or Eagnas?
Its a tensioner I saw on **** for $200 bucks from a Gamma 6004. I am interested in putting it on my Eagnas 6500 machine (had a machine, but missing the tensioner) and thought this would be the perfect purchase to make my machine complete without spending $550 on a WISE head.