Try Armory Craft.

 

The first two links are more for DIY with Wolff Gunsprings and Armory Craft.

The last two links are both DIY and you can send in your competition pistol, and the Sig Armorer and GrayGun will both tune it for you.

https://www.gunsprings.com/index.php

Armory Craft - CZ Grips - Sig X5 X6 Pistols - Flat Sig Sauer Triggers

SIG X5 X-five Pistols, Flat Adjustable Sig Sauer 220 226 227 229 238 938 Triggers - X6 X-Six Pistols - CZ 75 Triggers - CZ 75 Aluminum Grips - CZ 75 Base Pads

www.armorycraft.com

The Sig Armorer | The Choice of Champions

www.thesigarmorer.com

P320 Competition Trigger System Installation

Installation services for our SIG Sauer P320 Competition Trigger System. Select either straight or curved trigger. Provides about a 4 pound pull weight.

grayguns.com

 

FYI, it doesn't appear that Wolf offers P320 springs. I like to buy spring kits for my guns when I can find them so I wish they had springs for the P320. Buying Sig branded springs, retail packaged, one at a time, is a rather expensive proposition.

 

Wolff springs are actually made for the 1911 but are known to work perfectly in the P320 Legions, X5's and full-size compensated pistols. You can purchase different guide rods including tungsten from one manufacturer and choose the Wolff spring you want including 10lb. Here's a link to Sig Guy who sells them. Wolff Recoil Guide Rod Springs / Recoil Calibration Kits | Sig Guy LLC

 

I use both Armory Craft and the Wilson Combat guide rod with a Wolff 12lb. spring shooting 124 grain.

 

 

Uncaptured springs are a blessing and a curse. They allow you to use different springs but you end up potentially breaking the TDL with too light of a spring or one that bunches up. They were designed to use 1911 spings. This blog post explains it all

Legion or X5 problem

Reasons and solutions for Sig P320 Take Down Lever (TDL) problem in Legion X5.

gogunusa.com

 

I wouldn't let that worry me.
Their gig is aftermarket TDL's and who knows if they are in spec and of the correct materials.

I would believe Armory Craft long before Gas Pedal since AC makes both components.
And I haven't seen any of this from Armory Craft.