SIG SAUER P-Series Factory Mainspring

SIG SAUER P-Series Factory Mainspring

This SIG SAUER factory mainspring is a replacement component for compatible classic P-series hammer-fired pistols. The exact catalog item is manufacturer part 1202830-R with UPC 798681475063. It is the blue/stainless/two-tone mainspring listing commonly cross-referenced as the SIG MAINSPRING-1 component.

A mainspring is part of the pistol’s hammer-strut assembly. Its condition and correct fit matter to the operation of the hammer-fired action, so an exact part match is more important than choosing by appearance alone. This item is intended for maintenance or restoration when the existing spring is worn, damaged, missing, or otherwise due for replacement under an appropriate service schedule.

Compatibility

Reliable parts references list this mainspring for selected SIG SAUER P220, P226, P228, P229, and P245 pistols. Compatibility can depend on the individual pistol’s production period and the style of hammer-strut, mainspring-seat, and grip assembly installed. The store catalog identifies the P228 as the model association, while established parts listings show the broader classic P-series fit noted above.

Do not assume that every pistol bearing one of those model names uses the same internal configuration. Compare the part number, current assembly, and firearm documentation before ordering. If the pistol has been converted to an E2-style grip or has aftermarket fire-control parts, confirm compatibility with SIG SAUER or a qualified armorer.

Product Details

• Manufacturer: SIG SAUER
• Catalog part number: 1202830-R
• Common SIG reference: MAINSPRING-1
• UPC: 798681475063
• Component type: hammer mainspring
• Model family: compatible classic P-series DA/SA pistols
• Quantity: one mainspring

Installation Notes

This is a small internal firearm component, not a complete mainspring assembly. Hammer-strut and mainspring-seat parts are not listed as included. Installation requires safe unloading, correct disassembly, and verification of proper function after reassembly. Because an incorrect spring or assembly can affect ignition and control operation, installation should be performed by a qualified gunsmith or armorer if the user is not trained for this work.

Before returning the firearm to service, follow the manufacturer’s procedure for inspection and a complete function check with the firearm unloaded. Stop use and seek professional service if any control, trigger, hammer, or safety function does not operate exactly as specified.