With a new G26 Gen 4 you need to "beat up the spring" a bit by shooting a few hundred rounds through it . Also buy some Rem Oil spray from WM and spray down the double recoil spring assembly and the guide rod with Rem Oil and then wipe off the excess - then go shoot a few boxes of White Box or Blazer Brass 115gr. (115 gr. just because it's reliable and cheaper than 124 gr. target loads) ... After I did the above I never had another FF to fire , FF to eject , etc. with my G26 Gen 4... Also hit the connector in back with a short burst of Rem Oil to keep the trigger smooth . *Funny , I never use Rem Oil again on the G26 Gen 4 as I'll use Break Free , Weapon Shield or some other CLP when I field strip . But I still give the recoil spring assembly + guide rod a burst of Rem Oil once in a while and then wipe off and it keeps things running smooth and reliably (I believe the PTFE Teflon in Rem Oil is the secret in this recoil spring application) - try it !!