Referenced product: PKIT-938-9
It does not look like the extractor is included. It appears that the kit includes the primary springs, grip screws, and what appears to be the extractor pin.

Referenced product: KIT-MCX-MAG-RELEASE
This is a replacement for the original / existing magazine release. It will not affect the insertion of the magazine (it will not lighten it).

Referenced item: TOOL-X-LTHRMN-BLK
Response date: 9-12-18
We don't have a firm delivery date but the last order was received from Sig roughly two weeks after ordered. We hope to see them in the next week or two.
 

Referenced product: TRIGGER-1
This trigger is for older German made P225's. The new US made P225-A1 uses a P239 trigger.

Referenced product: TRIGGER-5
From our research it looks like it may not be compatible with older P220's but it would likely be compatible with a P229. We recommend calling Sig Sauer directly for verification on parts compatibility for firearms not ...

Referenced product: PKIT-MPX-9-SEMI
Response date: 9-14-18
It looks like Sig projects a delivery to us in the next two to three weeks.

Referenced product: GSCREWSET-220
This does include five screws.

Referenced product: GRIP-MOD-C-943-SM-BLK
Response date: 9-18-18
This is an updated Gen2 grip module. We will make sure our photos are updated soon to reflect the newer design.

Referenced product: PKIT-227
Response date: 9-28-18
Currently our open order shows estimated shipping in about one week. We've had this item on order with Sig since March so they have been very slow to deliver.

Referenced product: PT-G17-MGB-G
This will fit both a Gen3 or Gen4 Glock.