If you plate your slide and your barrel and get too much of a plating buildup, the slide will no longer go into battery, another words the slide will lack at least 1/8 of an inch of going fully forward and not go into full battery position and your Sig will no longer be operational. A Sig pistol has a reset spring and you can see it by looking at the back of your hammer, just above the tang of the frame. The 230, 232, 239 are different. No other major modern semi auto pistol uses this system. If you lighten your hammer spring too much by cutting coils or by using a light replacement spring you will have misfires.
I have seen many Gunsmiths and Pistolsmiths install the triggar bar spring in the wrong hole in the trigger bar and this could cost you your life. A Sig pistol can be super reliable but when you treat it like these other semi autos with out the reset design you are just begging for a disaster. I can not begin to tell you how many times I have repaired Sigs that have already been worked on by the "EXPERTS".
If you do not believe me, take the word of the factory in Exeter, N.H. Last I heard they take in around 6000 repairs a year. They just love these SMITHS that have worked on your Sig as the repair bill just goes sky high. I think you must use the following guide lines if you own a Sig Pistol.
Encrypted Secure Order Cart. Following are all the Payment Options:
Checks and Postal Moey Orders made out to Shooter Solutions, 470 W 2nd St, Suite 101, Sumas WA 98295
360-988-6583
Ordering outside Washington State but in the US 1-800-350-1537.
e-mail help@shootersolutions.com?subject=help no internet connection: phone is better. me