Glock gen 3 slides/barrels that ship to CA?

I recently picked up a g17 gen 3 frame that I’d like to use for a full build. I’m able to find basically every party except a barrel and oem slide shipping to California.

I’d prefer an oem slide hopefully not as expensive as the mos slide or at least with a barrel. Planning to get it wager cut. New or used is fine. I’ve tried eBay but nothing is shipping to CA.

Barrel I’m okay with oem or something aftermarket that is known to be good quality as this guild will be a training/competition gun I plan to put thousands of rounds through.

Expensive option seems to be mos slide and a Kkm barrel ordered through an ffl