Rogerborg
Supporters
- Aug 22, 2017
- 9,190
- 6,048
The sa-eo3 is a quick change spring you don,t take out the gearbox done from stock tube dead quick
Even better! PatrolBase say "The ESA™ quick change spring system makes changing the main spring a couple of seconds once the gearbox is removed", but that might be copy-pasta from another toy gun.