Originally Posted by Cobra64
If it's not a CPO, and you are not comfortable servicing your own pistols, SiG has this service package:
SIG SERVICE PACKAGE
Detailed stripping and complete and thorough ultrasonic cleaning of the entire pistol. Professional safety inspection of critical components by factory
certified personnel. Replacement of springs prone to wear ( trigger bar spring, slide catch lever spring, recoil spring) and any needed small parts.
Then lubrication to factory standards, reassembly and function testing. ALSO INCLUDES THE FACTORY INSTALLATION OF SIGLITE NIGHT
As for "aluminum jacket" ammo...
Perhaps you are confusing that with Blazer "aluminum case
This^^^^ and buy some factory Sig mags and you should be good to go . Congrats on the P220. I love mine.