I have a non-45ACP post-upgraded FCU without the manual safety.
Does anyone have a parts list with the Sig part numbers?
Planning to do a 9mm P320 build.

quote:

Originally posted by Patrick0525:
I have a non-45ACP post-upgraded FCU without the manual safety.
Does anyone have a parts list with the Sig part numbers?
Planning to do a 9mm P320 build.

I've built 3 so far.
Excellent design.
Here's the best schematic on the Web.
The part numbers are hot and MGW shows the actual SIG part number, not a proprietary stock number like some others do.
https://www.midwestgunworks.co...auer-p320/parts.html

You won't need part #34 (spring) that's a remnant from "Gen 1" and should have been removed from the schematic.

I already started buying from MGW and snagged qty 3 complete sear assemblies for $45.70 each. I think that this is the most critical high demand piece. Guess what after several hours they are sold out again.

The sear assembly group part# 8900033

Sear Housing
Sear
Safety Lever
Sear Springs
Takedown Safety Lever Spring
Sear Pivot Pin
Safety Disconnect

I am having a hard time finding the safety lever pin and the roll pin 2.5mmx20mm
Any luck anyone?

https://www.midwestgunworks.co...auer-p320/parts.html

Check out
https://osagecountyguns.com/sig-sauer-1301341-r.html

Your post literally made me buy all the parts to build ANOTHER P320

I am selling P320 sear housing assembly spiral roll pins in the classified section. There are $5/pin at MidWest Gun Works. 2.5mm X 20mm

You got a P320 Safety Lever you're willing to let go?

I bought the sear group assembly 8900033 and contains one safety lever. I don’t have any extra safety lever lying around.

Sorry

quote:

Originally posted by Patrick0525:
I bought the sear group assembly 8900033 and contains one safety lever. I don’t have any extra safety lever lying around.

Sorry

Are you selling the entire assembly?
Is it for the P320?

Look up 8900033 using the above Midwest Gun works link. I believe it everything u need in the sear housing. It also includes the sear housing pin.

i have everything minus the safety lever.
1302387-R

I've purchased a ton through midwest and the entire sear assembly kit you mention is always sold out.

Good lookin out tho!

Calculated my total FCU costs.
Is it cost effective to build from scratch considering that Sig is planning to offer a $299 FCU with a flat trigger in late Oct 2020?


Answer: Yes, a small saving but u get build experience. Need to get a refurbished FCU.
By going directly to a custom build, there are no parts duplication since u are not starting with a fully built P320 FCU.

Goal:
Build a P320 FCU from scratch with the best available parts. All brand new factory Sig parts except where noted. AB Prototype (ABP), Apex Tactical (APT), McMaster-Carr (MC), Combat (WC).

Cost:
20+46+4+119+58+24+1+9 =$281


FCU SIG refurbished (ABP)- factory updated FCU, no manual safety, non-45 ACP FCU
========
Sear group housing assembly
SIG part# 8900033 includes sear pin
========
Slide release spring and post (WC)
========
Apex Tactical advanced flat trigger and trigger bar (APT)
Apex part# 112-031
========
Slide catch lever
Slide catch lever release pin
Takedown lever O-ring
Release lever bar
Trigger bar spring
=======
Takedown lever and trigger stop pin
========
Spiral roll pin (MC) and safety release pin

Did u get on the back order notification list? It took two notifications before I got my sear group housing assembly. They usually sell out in an hour.

I am missing one part the safety pin. Sold out on MGW.