Is the recoil system on the G30sf different than the G30/G4?I wouldn't give up a tried and true Gen3 SF that is already paid off for a new Gen4. Not much if anything to gain. I do not like the new recoil system. The old one worked fine for many years.
Have (2) 30s will take 21 mags.30S only accepts 10/rd mag as I understand it.