Anybody have a spare locking ring from a Freefall or Crayon Estes kit? This is the ring that glues to the body and the fin can locks on after motor installation.
Estes should offer these in packs of 6.
My son has a couple rockets with with plastic caps.
First flight melted one of the 2 that came with the kit.
I think it was one of the reasons he lost interest in rockets.