Thunder products Orange secondary spring

[Kenzie]

I was wondering guys who have swapped to a roller secondary. Either a thunder products set up or Hauck stm or sidewinder set up. Doesn’t seem to be a whole lot of info on them other the increased backshift and more adjustability on spring wrap. No real reviews on the increase of performance or if it was worth it or not.

 

[Kenzie]

Just seen the roller secondary thread. I’ll post in there